get a wild hair up (one's) butt

get a wild hair up (one's) butt

1. rude slang To become intensely annoyed or irritated. Everybody who lives on this side of town gets a wild hair up their butt about the traffic delays from construction of the new inter-city tramline.
2. rude slang To become obsessed (with someone or something), often when said obsession is strange or unexpected. I don't know why Mom's got a wild hair up her but about going to Paris all of a sudden. She doesn't know the first thing about France!
See also: butt, get, hair, up, wild
Farlex Dictionary of Idioms.
See also:
  • get the hump
  • give somebody/get the hump
  • aggro
  • go spare
  • cob
  • get a cob on