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1.
A horrible person who is geeky and creepy and, most of all, shit to their friends.
Girl1: Did you see what she just did!
Girl2: Wow, what a greep...
by BeckyK October 14, 2012
 
2.
a person who is a member of a glee club and tends to be creepy
Wow, that girl in the back of that picture is a greep.

Dang he can sing, but he is still a greep.
by IlOvEgLeEcLuB November 30, 2009
 
3.
Noun - A Geeky Creep. A creep whose modus operandi is super geeky (such as the internet).
verb - the act of creeping out in a geeky manner. used in the smae maner as the verb "to creep out"
He was a typical greep. All he ever did was surf the net and create false identities in the hope of finding a hot date. And when he did find someone, he would greep out his victims by spamming their inbox.
by Uditra August 06, 2007
 
4.
1.To sneak, creep or move in a covert manner.
2.To use a long pole with a hook on the end to grab an object or person.
I hope if I can greep out of work early today without anyone noticing.

I'm going to greep the next person to walk through this door.
by Mike March 14, 2005
 
5.
The flow of blood that exits a man's anus (similar to a menstrual flow). It only occurs once in his life time, and it is the defining moment of his manhood. The flow lasts for 2-3 weeks and the suffering transforms a boy to a man.

When compared to a females period, greep is scientifically proven to be worse. Dr.Schlitterbauhn, part time disney world OB GYN, commented, "on a scale of numb hand to two stubbed toes, greep is around the pain level of whale birth".
"Dude, you are such a child."
"Naw, man. I greeped last week. Im a full man now."
"Damn straight you are"

"I accidentally licked my greepage."

"Kill yourself now."
by Disneyworldobgyn November 20, 2013
 
6.
Noun - A Geeky Creep. A creep whose modus operandi is super geeky (such as the internet).
verb - the act of creeping out in a geeky manner. used in the smae maner as the verb "to creep out"
He was a typical greep. All he ever did was surf the net and create false identities in the hope of finding a hot date. And when he did find someone, he would greep out his victims by spamming their inbox.
by Uditra August 12, 2007