pump shipurinate. euphemistic
The expression originated in nautical terminology, denoting the pumping of water from a ship's bilges.
1. tv. to urinate. (Crude. From an expression meaning to pump the bilge water from a ship.) He stopped and pumped ship right in the alley.
2. tv. to empty one’s stomach; to vomit. (Crude. Less well known than the previous sense.) After I pumped ship, I felt better.