gone pear-shaped Share definition Flag British slang for events taking an unexpected turn for the worse. (See also "Pete Tong") "I was hoping this would be a great party but it's all gone pear-shaped now the police have turned up..." gone pear-shaped by Amy June 28, 2004 0 0 Get merch Get the gone pear-shaped mug. Buy Now — $32.95 See more merch