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
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
when you get attacked by a group of people
I just got jumped by a gang of lebanese
by Smavie September 15, 2003
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
Underagers getting random strangers walking past to go into a shop and buy alcohol for them, literalluy jumping into the shop for them. Usually targeted are junkeys, alcoholics, students and foreigners.

OriginatedGlasgow/ any poor area with drink problems
Jason " How are we gonna get that booze for tonight"

Jonny " Theres a tramp over there. Come on lets get a jump in.
by Jondooo November 2, 2009
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
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