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!"
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.
Laughing way too hard at something that is not that funny.
"Dude she's geekin for no reason"
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.
Word used to describe the feeling from using meth-amphetamines
Whoa, dude, I'm geekin balls
When someone is acting very strange or weird, usually after smoking marijuana.
“Bruh he was geekin last night”