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A boombus is a sweet ass sex move.
It is when a funnel is sharply jammed into the corn hole of a fat butt. Then jello is placed in the funnel and blasted into the hole with a leave blower. The jello will slip in nicely. For the rest of the day the individual will walk around with the jello inside their hole. Sometimes it is known to seep out into their underwear, sometimes mixed with poo.
If they get hungry, they can just grab a cup and squeeze out a tastey treat. This is known as the Boombus Blast.
Guy 1: Damn, my boombus keeps sloshin' around some gunk is seeping down my ass cheeks.

Guy 2: Shit man, that's ghetto. I'm pretty hungry anyways. Blast that treat.
Boombus by Joezeff58 July 8, 2010
Related Words

boombuster 

when you ejaculate on your friends forehead and he makes angry bird noises at you
i was at my friends house when i got called a boombuster by my friend
boombuster by huckle berry March 11, 2025

BoomBuster 

when you ejaculate on your friends forehead and he makes angry bird noises
i gave my friend Alex a boombuster
BoomBuster by huckle berry April 10, 2025