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1.
A perpetrator is...

-Someone who dresses 'gangsta,' talks 'gangsta,' and generally acts 'gangsta,' but doesn't live the gang lifestyle.

-Someone who admires emulates the gangsta style of dress, speech, music, etc, but doesn't commit to a gangsta life.
"Nah, man I'm just a perpetrator! I like the clothes!"
by Justin April 03, 2005
 
2.
some motherfucker who crosses or disrespects you.
"shut up, you motherfucking perpetrator."
by mothafucka45 January 21, 2010
 
3.
1.A friend who oversteps his/her boundries when it comes to matters of money, personal items, or the opposite sex

2.A person who tries to create an imtimate relationship with a group of friends not carring the consequences of his/her actions.
1. John-"Hey how you doing my name John. Whats your?"

Tyrone- (in head) "I know this nigga seen me walk up to her and spit at her first. This nigga perpetrating."

2. John-"Wait, you fucked Crystal?"

Tyrone- "Yeah, why?"

John-"I fucked her too. I know she know we homies...unless she want the whole team to hit?"

Tyrone- "We have a perpetrator."
by Dicky Longford May 01, 2010
 
4.
to claim membership in an exclusive organization such as a fraternity or sorority without actually being a member. To go as far as to purchase wearing apparel (paraphernalia) to keep up the facade.
Joe was in fear of his life once it was discovered he was a perpetrator who had falsified a claim to membership in the Omega fraternity.
by arch-overlord December 16, 2009
 
5.
An individual, typically a college aged male, that spends his weekends crashing parties in order to shoot game at drunk and desperate women. Someone engaged in the act is typically described as perpin or straight perpin. A typical perpetrator travels in a party of no less then 2 other perps.
The awkward freshman hitting on Betty was clearly a perpetrator and was quickly removed from the party.
by OMJB85 November 18, 2008