Never Have I Ever is a drinking game where one person says never have I ever (Done Something) if someone else has done that thing they have to drink. It has only ever appeared in one episode.
Penny: Never Have I Ever
Leonard:Never Have I Ever Been Arrested : Sheldon Drinks
Leonard:Never Have I Ever Used Sheldon's Toothbrush To Clean The Sink : Penny Drinks
Penny: Never Have I Ever Come Up With A Nickname For My Own Genitals : Leonard Drinks
Amy: Never Have I Ever Completely Rocked My Girlfriends World In Bed : Sheldon and Leonard Drink
Sheldon : Never Have I Ever Kept A Secret Bank Account Because I Don't Think My Wife Can Handle Money : Leonard Did But He Does Not Drink
Sheldon and Amy:
Sheldon Oh, never have I ever drunk milk past its expiration date.
Amy: Never have I ever cancelled a dentist appointment.
Sheldon Oh, uh, never have I ever put my foot in the ocean.
Amy: Never have I ever honked if I liked anything.
Sheldon Oh, uh, never have I ever thrown, caught or touched a Frisbee.
Amy: : Never have I ever put salt on my food without trying it first.
Sheldon Oh. Never have I ever pushed all the buttons in an elevator. Amy drinks.
Amy: Well, we all have a past.