a hair across (one's) ass(redirected from a hair across her ass)
a hair across (one's) ass
rude slang What one is said to have if they are intensely annoyed or irritated. Everybody who lives on this side of town has gotten a hair across their ass ever since the construction of the new tramline has caused such terrible traffic jams. After experiencing so much turbulence on her flight, Liz really had a hair across her ass by the time she landed.