Top Definition
to ride by a group of people with rap music really loud so that they will think you are cool because your speakers are bumpin'
Jenny: "Damn did you just see those really cool guys ride by with that hot music blaring?"

Sammy: "Hell yes I did, they were totally doing a bump through"

Jenny: "what is a bump through?"

Sammy: "shut it, your a stupid cunt."
by yobabydaddybia March 28, 2007

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