reg 

one who stays sober at a party. The art of going to a party, specifically intended for drinking, and drinking nothing. Short for regular.

"I'm regging it up tonight, and in that being a reg, and staying sober, like a reg."

reg by Gandrew Arrett March 6, 2004

reg 

slang for indian or pakistani people. reg rarney the pakistani

london is full or reg's

reg by regrarney October 24, 2007

reg 

Regular

Someone who posts on a board on a regular basis

Antonym: n00b

"WhEn Do I GeT To Be Teh Reg?!"

reg by Richard [Zeratual] November 30, 2002

reg 

One who does not partake in the consumption of alcoholic beverages with their peers; Someone who does not consume alchol at a party intended for intoxicated individuals.

"Fuck, I hate regs, they just sit and watch you drink. They make shindigs wierd."

reg by Daniel Kobiaka March 17, 2004

Reg 

To pen someone’s nipple and stick your penis inside (the milk duct)

I am going to reg your mum

Reg by The regger April 14, 2023

reg 

One who can not handle relatively small amounts of cannabis; Someone who, after smoking relatively small amounts of marijuana, proceeds to vomit and pass out.

"I'm fine guys, I'm fine.. It was just a little thing back there..." "Are you sure, you seem to be a reg"

reg by NWA March 17, 2004

Reg 

Used as a noun or as an adjective.
A bad combination of retarded and paranoid.
Defined as possessive, psychopathic, bent on the destruction of happy people, insane and most likely incapable of thought.
Acts emo even if there's nothing to bitch about.

"Oh my God, did you see his new girlfriend? People say she's a Reg."

"Stop acting like a Reg, bitch."

"A Reg came between me and my boyfriend!"

Reg by In the Lala Land January 1, 2009