A variation of the bump and grind which results in accidental or "accidental" penetration...aka sex on a dance floor.
Joe: "So dude, how was the party last night?"

Dan: "Man, it was awesome, me and Kelly were grinding all night and then....we started speedbumping."

Joe: "No way man! Nice!"
by Yeskimo August 19, 2009
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Run over by a car in a way that whatever is run over goes underneath the car and is run over by the tires, causing the car to bump up and down. Just like driving over a speed bump.
A UPS truck speedbumped by neighbors' cat last week.
by Narcosis13 February 27, 2015
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An imaginary disease associated with being extremely annoyed or frustrated by speed bumps
Person 1: Ugh, those speed bumps are SO annoying!
Person 2: Looks like someone has a case of speedbumpitis..
by Lily McDonald January 15, 2008
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Also known as a skidmark but more commonly refered to as a nigger or niglet in the middle of the road.
Oh shit Bill, there's a nigger in the road!
Floor it Earl thats just a speedbump.
by Julia,spanky,meat December 02, 2008
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A line of either Ritalin or Adderall that you blow... makes you speedy!
Guy 1: Man, I have so much work to do tonight.

Guy 2: Don't sweat it, buddy. Just do a speedbump, you'll get it done in no time.
by speed-demon65 February 22, 2010
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when u have quickie wit a bird
guy:famz i heard u n rasheeda wuz goin all night,son
2nd:nah B,it was just a speedbump
by Kool-Aid September 11, 2004
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A person whom from a distance appears attractive but upon further inspection turns out to be ugly.

The term is derived from the motion in which you would drive over a speed bump. You slow down to check out said person and upon discovering how unattractive they really are you resume speed and continue on course.

The opposite of a Stopsign
Two young men walking together -
Joe: Yo, that girl is phat to death.
Rick: Yeah, lemme catch up to her before I try to holla.
"Rick and Joe catch up and continue to walk past"
Joe: Speedbump?
Rick: Totally.
by J--Mac August 06, 2007
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