stick up (one's) ass(redirected from a stick up my ass)
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stick up (one's) ass
rude slang A rigid and uptight demeanor. I can't believe Ms. Jones gave me a demerit for being a minute late! Ugh, she has such a stick up her ass! Tim's no fun, he always has a stick up his ass—why did you invite him to your party?
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.