1) To play music in your car with subwoofers loud enough to were other cars around you can hear the bass coming from them.

2) Also used when saying a song has a lot of bass, and hits subs hard.
1) The black people at the stop light in the Impala with 20" blades were bumping so loud it was shaking my car.

2) You heard that new Wayne song? That shit bumps.
by Tylerey December 29, 2011
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In message board terms, to reply to a topic that has become inactive, thus "bumping" the thread to the top of the thread list.
Man, this dolt bumped a thread from last year.
by coyfox December 3, 2004
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To have a a party or social gathering and the police show up. ; shut down.
Todd: "Hey you going to Maria's house tonight?"

Jake: "No way man, it's definitely going to get bumped."
by Suzy Q11 August 5, 2015
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(1) To SNIFFF any kind of drug. You can bump anything from medicine to Coke, K to Keef, Oxy to E. It applies to all pills, and all alphabet drugs.

(2) To play any type of musiq you listening louder. To turn it up.

These people who made their own defitions for it (kokane and some other fools) claiming a bump is specifically for sniffing yay are completely wrong. DO NOT be fooled by incorrect definitions.
(1) a.) Bump that linee
b.) Hit this bump real quik
c.) Put the yay on the key and bump it

(2) a.) Bump that track up
b.) I bump this sh*t whenever it gets
play on the radio
by JAYO-FAM April 28, 2005
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When you've got the raw end of a deal, most commonly associated with cannabis.
Dan: Here Dave, I got 10 oz of skunk, lets party!
Dave: This isn't skunk, it's parsley! a fucking herb! And its only 2 ounces, you've been seriously bumped!
by The Master E March 14, 2007
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Word used as a descriptive for being stiched-up in any particular sale or transaction. Commonly heard on the streets and housing estates of South London, UK following a drugs deal.
Damn! I paid for 14 ounces of weed, and I got given 10. I got bumped!
by DC December 10, 2004
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Used to agree with someone, therefore bumping the idea to the next level.
Someone: Hey why don't we all go get high?

You(in support): BUMP IT DUDE!!
by ROFLcopter February 9, 2005
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