Bullshit is the more common name for a card game often described by the milder names "Butterscotch," "I doubt it", "Bull", or "Peanut Butter." It is also known by other euphemisms such as "BS", "Cheat", "Schmeat", " Bacon-Stripping", or by making up another name with the BS acronym. A dysphemistic alternative name is "YFL": "You Fucking Liar".
Bullshit, also known as who shit? and somebody shit in the parlor, is a drinking game that requires a minimum of four players. At the start of the game, each player chooses a kind of shit to represent him. Typically, the shit is some sort of animal shit such as "dog shit", "monkey shit", and so forth.