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5.
To act in a hyper manner or to "whyle out" as they say in new york.

Yo, after the Ravens won that last game, we was geekin' hard.
by Prince Blakk July 12, 2006
 
1.
1.When a person can not stop laughing for anything due to intake of drugs or alcohol

2.When a person is entirely too slap happy.
"wow, hes geekin."

"Get geekin away from me, now!"
by Villa Ass Steve March 15, 2005
 
2.
Laughing way too hard at something that is not that funny.
"Dude she's geekin for no reason"
by lilwwwww February 01, 2009
 
3.
Any behavior caused by cocaine use.
Man, I was geekin.
by Angela Lines December 16, 2003
 
4.
when you get too excited about something, or someone.
brah, I went to that trey songz concert last night, I was geekin.

man dis sexy ass nigga at da mall was tryn 2 get @ me, bra i was geekin.
by lweezybaybay November 26, 2009
 
6.
Word used to describe the feeling from using meth-amphetamines
Whoa, dude, I'm geekin balls
by LilRaver December 20, 2005
 
7.
To be high off of any type of pill, Xanax, Percocet, Extacy, Molly, Etc.
"I swear to GOD I was geekin' off that 512 the otha night boe"

"Hell yeah, Them Percs will have you geekin' "
by AlsoKnownAsCj May 20, 2014