Definitions by Harvey B.
yellow hammer
A person of the trades (auto mechanic, carpenter, plumber) who knows virtually everything about his particular line of work, but little to nothing about anything else. This can include life itself. While not considered a derogatory term by any means, it *implies* said person would do well my expanding their horizons.
Darn this carburetor! I can't figure it out. I gotta call yellow hammer over and have him take a look at it.
yellow hammer by Harvey B. February 9, 2009
Butt Pump
A device, generally electric powered, that assists one in excavating/evacuating feces from the rectum. Most models come with a hose and a number of adapters to fit various anal openings. Commercial Series models are found at some rest stops along Interstates to aid constipated travelers.