Something that really sucks, is mega-lame, and/or blows goats Reno style. The opposite of the jump off, which means a really awesome thing or event.
Peter: "Wasn't Sean's party last weekend the jump off? I hear you hooked up with Veronica after that. Way to go. Soooo hot, want to touch the heinie."
Robbie: "Yeah the party was the jump off, but you know what's the jump on?"
Peter: "What?"
Robbie: "I think I got the clap!!! It itches. Also I've got some real nasty you know who."
Peter: "Ooooh...Dick Trickle? That's rough, chief. Totally NCAA."
Robbie: "Word to your mother."
by Nicholas D January 20, 2008
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Typically used in the Gang community. to initiate a new member they kick their ass for a pre determined amount of time.
"all little carlos has to do to be member is to survive the Jumping in"
by Caldie May 2, 2008
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A surprise or planned fight, when either (a)one individual is attacked/beaten by a group of 2 or more individuals or (b) when a notiably larger group attacks/fights a smaller group of individuals. These fights can occur with or without any kind of valid reason to jump someone.

A onesided fight.

verb jumped
"Man lets jump this kid coming this way on his bike"

"Me and my cousin are going to jump this guy that stole our car"
by DetroitSlang May 14, 2003
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when you get attacked by a group of people
I just got jumped by a gang of lebanese
by Smavie September 15, 2003
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1. to fight(often applied to street gangs, especially denoting a surprise attack)

2. to attack or assault

3. to copulate with
They tried to jump those punks over there.
by The Return of Light Joker February 20, 2008
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to be attacked by two or more people
Did you hear Steve got jumped at the club last night?
by Gerard Irick June 12, 2009
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to randomly have a shit load of guys to run at you and beat the living fuck out of you.
holy shit johnny got jumped at the candy store yesterday.
by dirtbiker April 14, 2009
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