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
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The act of being late when meeting a group of people for an event, either due to outside circumstances or personal laziness.
"Don was supposed to hit the road at 9, but he's Greggin it"
by Oniwana December 14, 2009
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ADJ.
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
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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 24, 2009
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the act of lying bolefacely infront of ones friends. especially about getting with girls from school *coughlawrenceprepcough*.
"yo dolla, i went to Kr*sten's house last night and we was gettin it on."

"kr*sten G*****s? stokes ur 'greggin', there's no way u got with that trick"
by Dolla hustla November 19, 2007
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The act of glazing someone or something with semen, much like an iced doughnut from Greggs.
Dude, I gave her a real good greggin’ last night. Looked like a yum yum afterwards.
by Mxcky July 12, 2019
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One who is either molested by their father or engages in deep intercourse with animals regularly. It can also mean having sex with multiple male partners at the same time.
"He has been Greggin it with that dog all night"

"There is about a bakers dozen worth of men in there Greggin it with Greg"

"He grew up Greggin it with his father most of the time"
by Bowser the awesome dog November 7, 2009
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