v. To act like a geek in extreme fashion. Also, to act like a complete fangirl or fanboy over something.
"I always knew you were tough, but tricking the probe by hiding behind the bones of another Super? Oh, man! I'm still geekin' out about it!"
by Ang D. November 11, 2004
to freak out when high off of marijuana or to just be extremely high and just wigging out.
Yo dude, I'm SO high. I'm totally geekin' out! Totally toasted.
by Lindsay BB September 27, 2007
The act of two or more individuals becoming entranced in a conversation about geeky suject matter.
Those two are totally geekin out over the size of their hard drives.
by KimberDubs November 10, 2008