The process of extending one's name with "in", adding it to a
vanity license place, and, therefore, becoming a complete
douche. Greg's new license plate is "Greggin." What a douche. by
Daughterkickedmydog April 12, 2010 6 more definitions Top
Definition 1. v. To skip out on previously made plans and
completely ignore commuication.  2. adj. A person who frequently
plans things and does not show up, or never answers calls,
emails, etc. "Josh planned out this movie night but he hasn't
even shown up, and he won't answer my calls! Yeah, he's
greggin'." by Jonesinpants January 23, 2009 1. extremely large
hole. 2. gaping Tony's asshole was greggin after going to
confessions with father chapholte.  The hole was greggin.. like
throwin a hotdog down a hallway. by thebombdizzle April 26, 2007
When a person is talking and you know they are bullshitting
about what they are saying. Man he is Greggin like a bitch by
DCD89 January 27, 2011 The act of being late when meeting a
group of people for an event, either due to outsi