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Three people who are, or are prone to, acting stupidly. A reference to the Three Stooges, a trio popular in the early-20th century for their slapstick comedy. A: "My brother has his two friends over, so let's go upstairs." B: "Sure. What are the Three Stooges up to today?" A: "Last I saw, they were wrestling each other in the living room." I'm not surprised to hear that those Three Stooges messed up the account.
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