When you chest bump your girlfriend instead of hug her on a regular day basis
"Dude it's bump day!"
You take a partially hard penis and thrust upon a girls leg, thigh, and or ass to show her what your working with.
I gave that fatty a chub bump.
Similar to a fist bump, but more intimate, given the smaller surface area. First observed among parents and their kids.
MADDY: Dad, I got 100 on my Social Studies test!
DAD: Way to go! Thumb bump
1: Front to front contact between two human males. Typically in a dancing/rocking action.
2: Supersaturation of males in any environment.
The dance floor is so full of guys that they are bumping tips.
Having sex with a girl who *doesn't* or hasn't shaven in some time.
Tyrone: "Hey P, did you bang Karen the other night?"
Peter: "Yeah, I bumped that bush all day and night. She really needs a trim, if you know what I mean."
Tyrone: "Yeah I know, after you left her house, I hit it too."
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Bumping the bush
a lesbian sex act which involves a certain mesure of flexibility. its rubbing and bumpung vaginas together
my dyke friends shave b4 bumping clams; man, i hope they dont get nether-beard burn!