1. A slow driver, elderly driver, one that pisses you off due to their slow nature.

2.Expletive used when you suck at Madden.
ASSDUMP!, lets move a litte faster!!!

Catch the F*ckin' ball assdump!
by Evan Ackley December 19, 2005
Get the assdump mug.
An asshole that dumps enough feces to completely fill a landfill
Man on phone: sorry man my anus is now an assdumper. I cannot gather enough toilet paper to save my life!
by Dandongding December 17, 2016
Get the Assdumper mug.