Watch 711-s12-e06-tbbt -

: Howard Wolowitz decides to dress up as Sheldon Cooper for Halloween at Caltech. Sheldon is initially oblivious, but once he realizes everyone is laughing at his personality quirks—rather than with him—he feels deeply insulted and hurt.

The identifier "711-S12-E06-TBBT" refers to Season 12, Episode 6 of , titled "The Imitation Perturbation" . Watch 711-S12-E06-TBBT

The Imitation Perturbation | The Big Bang Theory Wiki | Fandom : Howard Wolowitz decides to dress up as

The story of this episode centers on a Halloween conflict and a sentimental revelation between the main characters: The Imitation Perturbation | The Big Bang Theory

: Penny eventually admits she does remember the Halloween kiss but wanted to "erase" it because she was drunk and only did it to make her ex-boyfriend, Kurt, jealous. She prefers to count the birthday kiss as their "official" first because it was the first time she kissed him because she truly cared for him. Costume Summary Initial Costume Party Costume Sheldon Doc Brown ( Back to the Future ) Howard Wolowitz Amy Clara Clayton ( Back to the Future ) Bernadette Rostenkowski-Wolowitz Howard Sheldon Cooper Bert the Chimney Sweep Bernadette Mary Poppins Leonard Inspector Gadget Inspector Gadget Raj Ruth Bader Ginsburg Ruth Bader Ginsburg Penny German Barmaid