op 

short for "to operate", as in to go on an operation for something (drugs, alcohol, etc.)

Tonight I'm gonna op on a bottle, an eighth of purp, and some Swishers.

op by GP650 May 9, 2005

op 

an abbreviation that stands for on point

Melissa hair is op!

op by Anonymous!!!! :0 April 2, 2015

OP 

original post

I agree with the OP, if abortion is murder, then a blow job is definetely cannibalism.

OP by Lecroan July 2, 2015

OP 

Only Professionals

OP is a well known team on Xbox Live. They are fierce and very competitive! OP is not a team to mess with there are about 20 TryHard members in this team and still growing. OP members are beast ass quickscopers and will Fucken demolish any team out there! (:

XBL Random: hey what does OP stand for?!
OP FAMOUS: Anything you want it to stand for...
XBL Random: Only Pussys?
OP CHOCOBEAN: Nah bro, Organic Peanuts!
MW2 LOBBY: Hhhaha

OP by Op Famous January 26, 2011

op 

Oral Pleasure

Damn i want some op,

op by Ann Omynus October 31, 2003

op 

shortened term for opium

yo son, lemme peep that op you just copped

op by Nik April 21, 2004

OP 

OP or "Original Pun" Is a word used mostly on the *chan imageboards. Often referred to by newfags as "Original Poster", but it have always meant Original Pun.

Anonymous 1: Mans erection lasted over 7 hours, died because of blood loss. Discuss.

Anonymous 2: Damn.. must've been hard.

Anonymous 3: what an OP lol

OP by ChanLegend August 31, 2010