Tammy Diffendorf is a fictional character portrayed by Kristen Johnston in the TV series Mom.
In the first episode they appeared in, titled Crazy Snakes and a Clog to the Head (season 5), they were 50 years old.
They appear in 57 episodes out of a total of 170 aired and have accumulated 16239 positive votes.
The character of Tammy Diffendorf is mainly associated with Bonnie Plunkett, Marjorie Armstrong and Jill Kendall.
Episodes57
Crazy Snakes and a Clog to the Head
episode S5.E17 april 2018When the ladies bring a meeting to a women's prison, Bonnie is attacked by an old acquaintance, Tammy, and Christy helps Bonnie make amends.
Big Sauce and Coconut Water
episode S6.E4 october 2018Christy is certain that Bonnie is in over her head when she invites a freshly paroled Tammy to stay with them.
Flying Monkeys and a Tank of Nitrous
episode S6.E5 october 2018When Marjorie's husband passes away, the ladies accompany her on a trip to memorialize him.
Cottage Cheese and a Weird Buzz
episode S6.E6 november 2018Christy and Jill clash over a gambling debt, and Bonnie's new hobby troubles Adam.
Puzzle Club and a Closet Party
episode S6.E7 november 2018Christy and Wendy help Jill clean out her closet, which turns out to be a bigger job than expected, and Bonnie, Marjorie and Tammy take up a new hobby.
Jell-O Shots and the Truth About Santa
episode S6.E8 november 2018Bonnie pushes Christy to mend her relationship with Violet, and Adam prepares for the grand opening of his bar.
Pork Loin and a Beat-up Monte Carlo
episode S6.E9 november 2018Christy competes with her classmates for a prestigious internship, and Bonnie babysits Tammy following her oral surgery.
Flamingos and a Dance-Based Exercise Class
episode S6.E10 december 2018Bonnie and the ladies help Tammy prepare for her first date since getting out of prison. Also, in order to take the edge off, Christy revisits one of her old vices.
Foot Powder and Five Feet of Vodka
episode S6.E11 december 2018Christy's search for a Secret Santa gift leads her to discover Adam has been hiding something from Bonnie. Also, Tammy looks for a job in order to avoid being sent back to prison.
Hacky Sack and a Beautiful Experience
episode S6.E12 january 2019Christy's smoking causes problems when the ladies take a road trip. Also, Bonnie offers Adam unsolicited business advice.
Kalamazoo And a Bad Wedge of Brie
episode S6.E14 january 2019Christy's plan to win her sponsor's approval backfires, and the ladies rush in to help after Jill's house is broken into.
Sparkling Banter and a Failing Steel Town
episode S6.E15 february 2019Christy is the only one without plans on Valentine's Day, so Bonnie takes her on a mother-daughter date. Also, Marjorie's attempt to have a quiet night in is ruined when everyone calls on her for help.
Skippy and the Knowledge Hole
episode S6.E16 february 2019Christy finds it challenging to quit smoking, while Bonnie helps Tammy prepare for the GED test.
A Dark Closet and Therapy with Horses
episode S6.E17 march 2019Bonnie reluctantly consults a therapist, Trevor, for help with her ADD, and Christy battles her urge to gamble on sports while helping out at the bar.
Soup Town and a Little Blonde Mongoose
episode S6.E18 april 2019When Christy gets sick, Bonnie is consumed with an overwhelming urge to mother her.
Lumbar Support and Old Pork
episode S6.E19 april 2019Bonnie has an unexpected reaction when she learns that Adam's bar is doing well. Also, Christy and Tammy go on a double date.
Triple Dip and an Overhand Grip
episode S6.E20 april 2019Bonnie and Tammy revisit childhood memories on a trip to their old foster home. Also, Christy and Jill regret accepting a date with two guys from their AA meeting.
Finger Guns and a Beef Bourguignon
episode S6.E21 may 2019Christy discovers her new job at a law firm isn't quite what she expected, and Bonnie's therapist, Trevor, pushes her to confront her problem with procrastination.
Crazy Hair and a Teeny Tiny Part of Canada
episode S6.E22 may 2019Christy has trouble enjoying her sober birthday when she learns her sponsor, Nora, is moving away. Also, an argument leads Bonnie and Adam to make a hasty decision.
Audrey Hepburn and a Jalapeño Pepper
episode S7.E1 september 2019Christy attempts to implement changes at Adam's bar while he and Bonnie are away on their honeymoon.
Pop Pop and a Puma
episode S7.E2 october 2019Christy and Adam clash over an incident at the bar, leaving Bonnie in a precarious situation. Also, Jill's new boyfriend, Andy, has trouble finding a way to impress her.
Goat Yogurt and Ample Parking
episode S7.E3 october 2019Christy is asked to perform questionable tasks for her demanding new boss, Veronica, and Bonnie has second thoughts about taking Adam's last name.
Twirly Flippy Men and a Dirty Bird
episode S7.E4 october 2019Christy escorts a reluctant Chef Rudy to court-ordered AA meetings. Also, Bonnie attempts to make Adam feel more at home in the apartment
Fake Bacon and a Plan to Kill All of Us
episode S7.E5 october 2019Christy gets a new challenge at her work, and more is revealed about Wendy.
Wile E. Coyote and a Possessed Doll
episode S7.E6 november 2019Christy tries to embrace positivity after having a meltdown. Also, Bonnie gets a glimpse of what Adam was like before his accident
Pork Butt and a Mall Walker
episode S7.E7 november 2019Bonnie and Adam go on a double date with Jill and Andy. Also, Tammy recruits Christy to mediate a sensitive situation with Marjorie.
Hot Butter and Toxic Narcissism
episode S7.E8 november 2019Christy regrets fleeing the scene after hitting a parked car. Also, Bonnie's therapist, Trevor, offers some tools to help her better communicate with Adam.
Tuna Florentine and a Clean Handoff
episode S7.E9 december 2019Christy and the ladies rally around Tammy when she has trouble adjusting to early release from parole. Also, Bonnie is disappointed when her perfect birthday gift for Adam gets a lukewarm response.
Higgledy-Piggledy and a Cat Show
episode S7.E10 december 2019Bonnie is forced to relive painful Christmas memories when Christy recounts tales from her childhood to Bonnie's sponsee, Patty.
One Tiny Incision and a Coffin Dress
episode S7.E11 january 2020Christy and Bonnie help Tammy with a difficult decision when long lost Aunt Cookie appears with a surprising proposition!
Silly Frills and a Depressed Garden Gnome
episode S7.E12 january 2020Christy and Bonnie support Marjorie when she attempts to reconnect with her estranged son. Also, Tammy sees another side of Jill while working as her employee.
Dammit Sandra and Viking Ancestors
episode S7.E13 january 2020Christy is troubled when sparks fly between Tammy and Chef Rudy. Also, Bonnie overreacts when her therapist, Trevor (Rainn Wilson), accuses her of rejecting his help.
Cheddar Cheese and a Squirrel Circus
episode S7.E14 february 2020After a successful kidney transplant surgery, Bonnie is concerned that Tammy's Aunt Cookie is taking her second chance for granted. Also, Christy tries to track down a handsome stranger she believes is her soulmate.
Somebody's Grandmother and the A-List
episode S7.E15 february 2020Christy helps Marjorie prepare for her first date since her husband's passing. Also, Bonnie's friendship with Jill is put to the test when a past indiscretion resurfaces.
Judy Garland and a Sexy Troll Doll
episode S7.E16 february 2020Bonnie helps Christy gain perspective as she considers a life-changing decision. Also, Jill fears she's running out of time to have a baby and consults a fertility doctor.
Beef Baloney Dan and a Sarcastic No
episode S7.E17 march 2020Bonnie suspects that Adam's sponsor, Sam, has an ulterior motive. And Christy is caught in the middle when Tammy plays hard to get with Chef Rudy.
A Judgy Face and Your Grandma's Drawers
episode S7.E18 march 2020Christy, Bonnie and the ladies step in to help when Marjorie babysits her granddaughter for the first time, on the 150th episode.
Texas Pete and a Parking Lot Carnival
episode S7.E19 april 2020Bonnie worries about her therapist, Trevor, when his life hits a serious rough patch. Also, Christy comes to Marjorie's aid when she has trouble adjusting to a new job.
Big Sad Eyes and an Antique Hot Dog
episode S7.E20 april 2020The ladies take a road trip to a sober weekend retreat
Sex Bucket and the Grammar Police
episode S8.E1 november 2020When Bonnie invites the ladies to a slumber party, childhood games reveal adult problems.
Smitten Kitten and a Tiny Boo-Boo Error
episode S8.E2 november 2020Bonnie and Adam regret spending their first wedding anniversary with Marjorie and her new beau; Jill's attempt at a good deed becomes a moral dilemma.
Tang and a Safe Space for Everybody
episode S8.E3 november 2020Bonnie takes a trip down memory lane when she reconnects with an old flame, Rod, while Tammy volunteers to remodel the kitchen so that it's more accessible to Adam.
Astronauts and Fat Trimmings
episode S8.E4 december 2020Bonnie and Adam offer relationship advice when they sense tension between Jill and Andy; Tammy lends a hand when chef Rudy opens a food truck.
Sober Wizard and a Woodshop Workshop
episode S8.E5 december 2020Bonnie is concerned about Adam's safety when he decides to go skiing for the first time since his accident; Tammy worries that Jill is sending the wrong message to the young girls they're mentoring.
Woo-Woo Lights and an Onside Kick
episode S8.E6 january 2021Bonnie and the ladies indulge Jill when she goes to extremes to get her relationship with Andy back on track.
S'Mores and a Sadness Cocoon
episode S8.E7 february 2021Bonnie is upset when Adam makes a big ticket purchase without consulting her. Also, Jill has an unexpected reaction when her dentist retires.
Bloody Stumps and a Chemical Smell
episode S8.E8 february 2021When Bonnie can't decide what to do with the spare bedroom, bigger issues are uncovered. Also, Tammy attempts to create boundaries with Marjorie.
Whip-Its and Emotionally Attuned Babies
episode S8.E9 february 2021Bonnie has success creating a line of mocktails for Adams bar. Also, Jill finds herself attracted to Bonnies therapist, Trevor.
Illegal Eels and the Cantaloupe Man
episode S8.E10 march 2021Bonnie and Adam's romantic dinner is interrupted as the other ladies struggle with love on Valentine's Day; Wendy's new relationship becomes the talk of the group.
Strutting Peacock and Father O'Leary
episode S8.E11 march 2021Bonnie takes it personally when her new sponsee gets inspiration from Adam instead of her. Jill trades barbs with a worthy opponent.
Tiny Dancer and an Impromptu Picnic
episode S8.E12 april 2021Bonnie goes to great lengths to protect someone she loves; Jill tries to make sense of her messy new relationship.
Klondike-Five and a Secret Family
episode S8.E13 april 2021Bonnie worries about Adam when his amends to a woman from his past doesn't go as planned.
Endorphins and a Toasty Tushy
episode S8.E14 april 2021Bonnie struggles with her own self-worth after Tammy finds success. Also, Jill's new hobby leads to an unexpected revelation.
Vinyl Flooring and a Cartoon Bear
episode S8.E15 april 2021Bonnie and Tammy's friendship is tested when they take on a big project together. Also, the women worry about a fracture in their tight-knit group.
Scooby-Doo Checks and Salisbury Steak
episode S8.E16 april 2021Bonnie decides to get to the bottom of why her therapist, Trevor, has been so distracted. Also, Jill and Andy find themselves in a life or death situation.
A Community Hero and a Wide Turn
episode S8.E17 may 2021The women attend a gala honoring Marjorie, but Bonnie's speech doesn't go as planned.
My Kinda People and the Big To-Do
episode S8.E18 may 2021Bonnie gains a new outlook on her sobriety after dealing with difficult news. Also, Jill and Andy take a big step in their relationship.
- Crazy Snakes and a Clog to the Head
- Big Sauce and Coconut Water
- Flying Monkeys and a Tank of Nitrous
- Cottage Cheese and a Weird Buzz
- Puzzle Club and a Closet Party
- Jell-O Shots and the Truth About Santa
- Pork Loin and a Beat-up Monte Carlo
- Flamingos and a Dance-Based Exercise Class
- Foot Powder and Five Feet of Vodka
- Hacky Sack and a Beautiful Experience
- Kalamazoo And a Bad Wedge of Brie
- Sparkling Banter and a Failing Steel Town
- Skippy and the Knowledge Hole
- A Dark Closet and Therapy with Horses
- Soup Town and a Little Blonde Mongoose
- Lumbar Support and Old Pork
- Triple Dip and an Overhand Grip
- Finger Guns and a Beef Bourguignon
- Crazy Hair and a Teeny Tiny Part of Canada
- Audrey Hepburn and a Jalapeño Pepper
- Pop Pop and a Puma
- Goat Yogurt and Ample Parking
- Twirly Flippy Men and a Dirty Bird
- Fake Bacon and a Plan to Kill All of Us
- Wile E. Coyote and a Possessed Doll
- Pork Butt and a Mall Walker
- Hot Butter and Toxic Narcissism
- Tuna Florentine and a Clean Handoff
- Higgledy-Piggledy and a Cat Show
- One Tiny Incision and a Coffin Dress
- Silly Frills and a Depressed Garden Gnome
- Dammit Sandra and Viking Ancestors
- Cheddar Cheese and a Squirrel Circus
- Somebody's Grandmother and the A-List
- Judy Garland and a Sexy Troll Doll
- Beef Baloney Dan and a Sarcastic No
- A Judgy Face and Your Grandma's Drawers
- Texas Pete and a Parking Lot Carnival
- Big Sad Eyes and an Antique Hot Dog
- Sex Bucket and the Grammar Police
- Smitten Kitten and a Tiny Boo-Boo Error
- Tang and a Safe Space for Everybody
- Astronauts and Fat Trimmings
- Sober Wizard and a Woodshop Workshop
- Woo-Woo Lights and an Onside Kick
- S'Mores and a Sadness Cocoon
- Bloody Stumps and a Chemical Smell
- Whip-Its and Emotionally Attuned Babies
- Illegal Eels and the Cantaloupe Man
- Strutting Peacock and Father O'Leary
- Tiny Dancer and an Impromptu Picnic
- Klondike-Five and a Secret Family
- Endorphins and a Toasty Tushy
- Vinyl Flooring and a Cartoon Bear
- Scooby-Doo Checks and Salisbury Steak
- A Community Hero and a Wide Turn
- My Kinda People and the Big To-Do
Best moments10
- Christy and Bonnie help Tammy with a difficult decision when long lost Aunt Cookie appears with a surprising proposition!
- Christy and the ladies rally around Tammy when she has trouble adjusting to early release from parole. Also, Bonnie is disappointed when her perfect birthday gift for Adam gets a lukewarm response.
- Bonnie and Tammy's friendship is tested when they take on a big project together. Also, the women worry about a fracture in their tight-knit group.
- Bonnie takes a trip down memory lane when she reconnects with an old flame, Rod, while Tammy volunteers to remodel the kitchen so that it's more accessible to Adam.
- After a successful kidney transplant surgery, Bonnie is concerned that Tammy's Aunt Cookie is taking her second chance for granted. Also, Christy tries to track down a handsome stranger she believes is her soulmate.
- Christy and Bonnie support Marjorie when she attempts to reconnect with her estranged son. Also, Tammy sees another side of Jill while working as her employee.
- Bonnie struggles with her own self-worth after Tammy finds success. Also, Jill's new hobby leads to an unexpected revelation.
- Bonnie and Adam offer relationship advice when they sense tension between Jill and Andy; Tammy lends a hand when chef Rudy opens a food truck.
- Bonnie suspects that Adam's sponsor, Sam, has an ulterior motive. And Christy is caught in the middle when Tammy plays hard to get with Chef Rudy.
- Bonnie and Adam go on a double date with Jill and Andy. Also, Tammy recruits Christy to mediate a sensitive situation with Marjorie.
- One Tiny Incision and a Coffin Dress
- Tuna Florentine and a Clean Handoff
- Vinyl Flooring and a Cartoon Bear
- Tang and a Safe Space for Everybody
- Cheddar Cheese and a Squirrel Circus
- Silly Frills and a Depressed Garden Gnome
- Endorphins and a Toasty Tushy
- Astronauts and Fat Trimmings
- Beef Baloney Dan and a Sarcastic No
- Pork Butt and a Mall Walker