Jim:(Upon hearing cries from the bathroom) "Jeff are you okay"? Jeff: I'm fine. That one was so good, I got the dumpbumps!
by Billy Numer May 01, 2008
(n.) A bump of blow (or really any drug that you snort), served to you while you are taking a shit. A line is also acceptable under these circumstances.
Serve me up a dump bump, please I'm trying to start this day off right.
by cjezioro September 21, 2010