arse over tit

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arse over tit

vulgar slang Flipped upside down; head over heels. Used both literally and figuratively. My poor sister just went arse over tit on the ice out there! I hope she isn't hurt! Finding out Bill is selling the company has turned my whole world arse over tit—I can't believe I'm going to have to find a new job after 25 years!
See also: arse, over, tit