pee like a racehorse

pee like a racehorse

rude slang To excrete an excessive amount of urine; to urinate for a long time. This is why I don't drink lots of beer: only a couple of pints and I'm already peeing like a racehorse. Can we pull over soon? I need to pee like a racehorse!
See also: like, pee, racehorse
References in periodicals archive ?
When a thoroughbred is treated with Lasix, it really does, to use a term my grandfather was fond of, 'pee like a racehorse'.