Greg 

verb, noun (derived from the word gregarious)

Meaning(noun):1. The act of familiarizing oneself with members of a social circle without invitation

2. A person who familiarizes himself with members of a foreign social circle without invitation

Other forms: to greg, gregging, greggage

Example:
Kabir: Hey Emma, mind if I walk you to lunch?

Emma: Quit gregging me King Gregoire the third.

Greg by Chuboy December 31, 2013

Greg 

He's just greg, dont ask, dont tell. We are bot sure about this guy he kinda cray

Greg once stabbed someone in the eye with a spoon, thats one of those go dammit greg moments

Greg by Darkdude19 January 22, 2015

Greg 

A very gay kid that sucks dick for free and cannot ever get friends.

Man: He is such a greg!
Man 2: Yea he reminds me of you!
Man: Thats not funny.

Greg by NothingDopeHere June 6, 2018

Greg 

The fastest growing fandom on the internet; Fans of Danny Gonzalez.

1. 'What's up Greg....'
2. 'What fandoms are you a part of?' ' ARMY, Blinks, and Greg'

Greg by Urban dictionary Dev October 12, 2019

Greg 

a digital nomad who juggles girls in different countries and act like he's all holier-than-thou. he also got extreme mommy issues and is super insecure.

Valeria: Hey, is that a Greg
Shaira: Yes, beware of STDs

Greg by notafoool December 23, 2019

Greg 

A guy that is married to cover up his purely homosexual appetite. Sits at the bar drinking with males while providing them handjobs.

Greg satisfied 3 guys at the bar in one night.

Greg by Atx723 July 11, 2020

Greg 

A Fucking Jackass

That guy is such a greg

Greg by TheREALdannyjackson September 17, 2018