(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.
Dumping a girl/boy to move up to a higher girl/boy therefore climbing up the datingladder. Dumping someone unfavorable to bump to a hotter and better alternative.
"Hey man, what happened to you going out with Alison?"
"Right now in dating Emily. I just dump and bumped that shank."