poop out verb4 •(US, slang) To quit due to tiredness.Do you poop out at parties? — 1952 •(US, slang) To make very tired; to exhaust.Climbing that hill really pooped me out. •(US, slang) To defecate.He pooped out a long, large turd. •(slang, vulgar) To give birth. formspooped out · pooping out · poops out