clam bumping

the act of to women (lesbians or bi) having sex by bumping there vagina's against eachother.

dude, i caught my ex and my mom clam bumping last night

by juneaus November 6, 2004

dumper bumping

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

bumping

blaring music and getting down to it. Jaming. Rocking out. Grooving to the music. Often used in reference to people driving down the road in their cars listening to some recording artists that they really like.

My neighbor is bumping Journey on his stereo.
We were bumping hardcore rap.

by runandwin July 8, 2005

bunny bumping

The act of making out while you and the other person are pressed up against an object such as a wall, a car, or a friend and grinding into each other. See dry sex.

"Dude, my girlfriend and I were bunny bumping against the washer and dryer last night"

by Ace Linnare July 14, 2008

peenjo bumping

When two men or more engage in Double Penetration Sex in a woman, in the same hole, and their penises rub up against each other. It might as well be considered tummy sticks.

Peenjo Bumping is all the rage in "straight" DP porn these days.

by th December 2, 2007

bumping uglies

doing the nasty, fucking, making love, screwing, having sex.

No, mom. Me and Amy were bumping uglies when you called last night. It was off the hizzoook!

by Luvmaker November 14, 2004

Shadow-bumping

On the IMDB forums, the act of posting a blank response and then deleting it a second later thus intentively bumping the targetted thread and remaining anonymous as the bumper.
Specifically detested because it is a stealth form of necroposting and often used by trolls.

boxOmetal: some idiot just revived that y2k thread
cardboardboy: yes, well done idiot
boxOmetal: wtf?
cardboardboy: saw your name on the most recent post before it was deleted you shadow-bumping idiot

by blueshift August 13, 2006