It's like saying "what the fuck" but you're in 8th grade and your mom is within hearing distance. Also, you can catch yourself saying "what the..." and instead of cursing, promptly follow it with "bumps". It'll confuse the sensitive shit head.
Hey, son, didn't I tell you to clean the garage?
What the bumps mom, I'm trying to masturbabte.
Listening to music in a car with the treble setting turned all the way up instead of the bass in an attempt to be different.
In an attempt to be different Emo Chris treble bumped instead of turning up the bass.
When two men rub their assholes together.
I’m planning on Bumping Boochies with Danny tonight
In what might be called a much earlier form of "twerking" (see Urban Dictionary for definition), the more versatile "bump", an extremely popular dance craze of the early 1970's, involved repeated and often continuous partner-to-partner hip contact of several specific varieties: rear to rear, side to side, front to rear (as in the aforementioned twerking), and last but not least. the mutual frontal option consisting of the thrusting of the partners' groin areas against each other in what can perhaps only be described as a sort of "dancing dry hump".
Man, can you believe it; I was doin' the Bump so good with this super hot chick at the party last night that I had to say to her "If we keep this up I won't be able to do anything else later!"
snorting a drug typically ketamine or cocaine out of a nitrous balloon
I got so fucked up after doing that philly bump last night.
To bump genitals that often leads to sexual encounters
Me and this girl were bumping biscuits in the back room.