pickgo jump in the lake . go jump in the lake {v. phr.}, {informal} To go away and quit being a bother. George was tired of Tom's advice and told him to go jump in the lake. Compare: GO CHASE YOURSELF, GO FLY A KITE. Categories: add yours bother informal verb Source: A Dictionary of American Idioms Subscribe to: American IdiomsEnglish Slang Comment on this entry