"The Bath Item Gift Hypothesis" is the first Christmas-themed episode of the television series The Big Bang Theory, originally aired as the eleventh episode of the show's second season, on December 15, 2008. It is considered the most popular and precious episode in The Big Bang Theory's history.


Bigbangtheory hug

Sheldon gives Penny a hug.

Penny informs Sheldon that she intends to give gifts to him and Leonard on Christmas which happens to be around the corner. After considerable debate with Penny, Sheldon agrees to also give a gift to Penny on Christmas. However, in the dilemma of presenting Penny with a correctly valued gift, Sheldon buys multiple basket sizes of the same bath item gifts, intending to gift the correct size according to Penny's gift and return the rest of the baskets for a full refund. At the same time, Leonard starts working with David Underhill (Michael Trucco) — the winner of the MacArthur Genius Grant — who starts dating Penny. Seeing Penny get interested in Science because of David, Leonard starts to get jealous and ends up confronting Penny about his feelings. Penny then informs Leonard of her breakup with David after she found naked pictures of his wife on his cellphone when he tried to snap naked pictures of Penny.

After Penny gets a little angry with Leonard for being so jealous about David Underhill, she eventually gives Leonard a kiss on the cheek and lays her head on his shoulder in a tender Christmas moment between the two of them. On Christmas Eve, Penny gives Sheldon a personally autographed napkin from Leonard Nimoy that he used to wipe his mouth, addressing Sheldon directly by his first name as a gift. After realizing the value of the gift and the DNA ("All I need is a healthy ovum and I can grow my own Leonard Nimoy!"), Sheldon excuses himself to get his gift for Penny. Penny then gives Leonard a gift certificate to motorcycle lessons — since it was the reason why Leonard hurt his leg — and Leonard gives Penny 101 Scientific Experiments for Kids — for her fake interest in Science while dating David. Sheldon returns to give Penny all the bath item baskets he bought for her. Since these were still not enough by Sheldon's standard, he proceeds to give Penny an awkward hug.


Warner Home Video released the episode as part of The Big Bang Theory: The Complete Second Season DVD set, released on September 15, 2009, and later on the Blu-ray set of the same name, to be released on October 1, 2013. The episode was also included, along with "The Maternal Congruence" and "The Santa Simulation", on The Big Bang Theory Holiday Episodes DVD, released exclusively ay f.y.e. in 2013.


Actor Character
Jim Parsons Sheldon Cooper
Johnny Galecki Leonard Hofstadter
Kaley Cuoco Penny
Simon Helberg Howard Wolowitz
Kunal Nayyar Rajesh Koothrapalli

External links

Warner Bros.
Warner Bros. Pictures Christmas in ConnecticutGremlinsLethal WeaponNational Lampoon's Christmas VacationJack FrostThe Polar ExpressFred Claus
New Line Cinema ElfThe Nativity StoryFour ChristmasesA Very Harold & Kumar 3D ChristmasThe Conjuring 2Shazam!
Blue Ribbon Content A Christmas Story 2A Cinderella Story: Christmas Wish
Made-for-TV movies National Lampoon's Christmas Vacation 2: Cousin Eddie's Island AdventureThe Year Without a Santa Claus
Live-action television episodes
Friends and Joey "The One With Phoebe's Dad" • "The One Where Rachel Quits" • "The One With the Girl from Poughkeepsie" • "The One With the Inappropriate Sister" • "The One With the Routine" • "The One With the Holiday Armadillo" • "The One With the Creepy Holiday Card" • "The One With Christmas in Tulsa" • "Joey and the Plot Twist" • "Joey and the Christmas Party"
DC Comics "Season's Greedings" • "Home is Where the Hurt Is" • "Twas the Night Before Mxymas" • "Lexmas" • "Gemini" • "Year's End" • "Three Ghosts"
Other shows "A Semi-Merry Christmas" • "Mel, the Magi" • "Mel's Christmas Carol" • "'Tis the Season to Be Jealous" • "A Christmas Story" (Growing Pains) • "A Christmas Story" (Just the Ten of Us) • "Santa on the Lam" • "Miracle on Elm Street" • "The Christmas Show" • "Fa La La La Laagghh!" • "The Man Who Canceled Christmas" • "It Came Upon a Midnight Clear" • "Deck the Malls" • "Christmas Day-Ja Vu" • "A Country Christmas" • "How the Finch Stole Christmas" • "Meet the Cuban Parents" • "Christmas Punch" • "A Clear and Presentless Danger" • "George Is Being Elfish and Christ-Misses His Family" • "Santa's Secret Stuff" • "A Very Supernatural Christmas" • "The Bath Item Gift Hypothesis" • "Christmas" (The Middle) • "It's Beginning to Stink a Lot Like Christmas" • "The Maternal Congruence" • "Jolly Red Elf" • "The World Ain't Over 'Till It's Over" • "The Santa Simulation" • "Give Santa a Tail-Hole" • "Home for Christmas"
Animated productions
Looney Tunes and related shows The Shanty Where Santy Claus LivesBedtime for SnifflesGift WrappedBugs Bunny's Looney Christmas Tales • "It's a Wonderful Tiny Toons Christmas Special" • "'Twas the Day Before Christmas" • "Jingle Boo" • "The Great Wakkorotti: The Holiday Concert" • "A Christmas Plotz" • "Little Drummer Warners" • "No Time for Christmas" • "A Pinky and the Brain Christmas" • "It Happened One Night Before Christmas" • "In Arms Way" • "The Twelve Days of Christmas" • Christmas Eve with Yakko, Wakko & Dot • "Noel" • "The Christmas Tree" • "The Banks of the Delaware River" • "Feather Christmas" • "Yule Be Sorry" • "Christmas in July" • Bah, Humduck! A Looney Tunes Christmas • "A Christmas Carol" • "Tis the Seasoning"
DC Comics "Christmas With the Joker" • "Holiday Knights" • "Frozen Out" • "Comfort and Joy" • "Storybook Holiday" • "Invasion of the Secret Santas!" • "Second Christmas" • "The True Meaning of Christmas" • "Teen Titans Save Christmas"
Hanna-Barbera co-productions "A Dickens of a Christmas" • A Scooby-Doo! Christmas • "Ho Ho Horrors" • Tom and Jerry: A Nutcracker TaleScooby-Doo! Haunted HolidaysTom and Jerry: Santa's Little Helpers • "The Plight Before Christmas" • "Scary Christmas" • "Scroogey Doo" • "It's a Wacky Life" • "Dashing Thru the Snow"
Other cartoons "Yuletide and Redtide" • A Cool Like That Christmas • "Santa Mask" • The Polar Express • "The Match Before Xmas" • A Miser Brothers' Christmas • "Da Grinchy Code / Duck" • "FROST / Undercover Claus" • "Fantastic Four Christmases / Red and White Collar" • Elf: Buddy's Musical Christmas • "Top of the Naughty List"
Have Yourself a Looney Tunes ChristmasA Hip-Hopera ChristmasMerry Christmas: Animaniacs & Looney TunesThe Looney Tunes Kwazy ChristmasA Looney Tunes Sing-A-Long Christmas
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