When you see a homie that you have not seen in awhile and you go in for pseudo hug, but one of you shifts your footing and you accidently bump your hang downs.
John sees mike..
john: hey bro
mike: sup fool!
(dudes go in for a bro hug)
Mike: damn bro, you just lost your footing and package bumped me!
john: my bad, son
john: hey bro
mike: sup fool!
(dudes go in for a bro hug)
Mike: damn bro, you just lost your footing and package bumped me!
john: my bad, son
by dmoney1979 September 4, 2013

when someone in the same room says or does something awesome and you want to give them a fist bump but are too lazy to go over to them, so you fist bump the other people around you until someone fist bumps the person intended to recieve the fist bump.
James: Remember when Steve burped the alphabet and did cartwheels at the same time?
Freddy: Yeah man, I gave him a chain fist bump for his excellence.
Freddy: Yeah man, I gave him a chain fist bump for his excellence.
by AmbyMT December 6, 2010

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!"
by backinbowl August 30, 2013

by lyder3ybc November 7, 2021

When you and your partner are having sex so rough you hit your head on the (nearest wall or vertical object) and then cum.
by OkieCat October 8, 2020

by Frank abbs July 21, 2018

When my girlfriend gets drunk she likes to bump stumps with her friend while I watch in the corner dressed as Batman.
by Explainatorium June 8, 2020
