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have a wild hair up one’s ass

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have a wild hair up one’s ass

1. tv. to act in a hyperactive and energetic manner. (Usually objectionable.) She has a wild hair up her ass about something. I don’t know what.

2. tv. to be obsessed with some strange or offbeat idea. (Usually objectionable.) You’re acting like you’ve got a wild hair up your ass. Calm down.

See also: ass, hair, have, up, wild