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

Raisin Bumping

the act of two or more old people having sexual intercourse

my grandma was raisin bumping with this guy last night
I walked in on my grandparents raisin bumping

by liimitzgaming March 27, 2011

Kernel Bumping

Running naked backwards through a cornfield.

How did you get that bruise on your ass?

I went Kernel Bumping last night.

by Colonel Buttock July 30, 2009

Thunder Bumping

The act of two fat people having sex.

Antwann was Thunder Bumping with some chick last night. I could feel the house shaking!

by Rescue Squirrel August 15, 2011

bagel bumping

the act of bumping your bagel with another bagel.

which can be translated to:
rubbing your vagina against another womans vagina

My girlfriend left me and i caught her bagel bumping with my mom!!

by Bushwack babe March 6, 2009

booty bumping

To administer a psychoactive drug rectally.

Idiot: Booty bumping tweak is awesome!

Idiot with deathwish: Stop being stupid. It's all about mainlining.

by Not an idiot July 11, 2006

speed bumping

A sex position calling for the girl to sit on the guy as they ride over speed bumps. WARNING: DRIVE SLOWLY, IT MAY BECOME PAINFUL IF YOU DRIVE TO FAST.

Tommy: Hey are you going speed bumping tonight with your girlfriend?
Alec: Yeah...I'm still sore from last night though.

by Homie Cool March 13, 2010