When two women engage in female lesbian sex. Bumpings clit on clit. In simpler terms, two girls rubbing pussy on pussy.
by LesbianLoverLKAH May 13, 2017

by yug May 31, 2007

by KKK-KKK August 23, 2011

Pushing up the Thumbs up rating of your definition on Urban Dictionary. Done to put your definition at the top above others.
by Minardi August 31, 2005

by juneaus November 6, 2004

Dirty anal sex. It was first pioneered by the Gap Tooth Pirate, Cromer. Before ejaculation, the man pulls out and cums on the girl's face, because "she knew it was coming".
Cromer and Tiffany were dumper bumping in the locked room. I knew because of the grunts of pain from Tiffany and the stink of bunghole and sweat.
by Captain Crunkbeard August 18, 2006

Those irritating little bumps you get on your tongue, which your parents or grandparents probably told you was from telling lies. Actually, they are infected tastebuds, probably caused from biting your nails, or putting some other dirty thing in your mouth.
When Little Bob was caught telling a lie, he checked his tongue so regularly for lie bumps, that he actually ended up getting one.
by Whiskey Drinker Me January 11, 2010
