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1.
The act of becoming emotionally and physically aroused by the sight or the thought of a technicality of a certain topic of major interest.

It resembles an "orgasm of the mind".

Geeking out is not a universal feeling. As a result, if one person in a group geeks out, everyone else is wondering in curiosity what is wrong with that person.
I geek out all the time that I read about my favorite software language.

When I saw how all the computers were built, I totally geeked out!

When I heard that he had collected all the baseball cards that I had looked for for so long, and he finally offered to show me that collection, I totally geeked out!
by DENSC March 15, 2009
254 74
 
2.
To become enthralled in an uncontrolable fit of laughter losing all thought processes and many fine motor skills. Usually occurs after smoking the reefer.
After seven bong rips, I looked at my friend carresing a can of tuna and started geeking out.
by Mike October 25, 2004
253 226
 
3.
to become immediately obsessive or enthralled in a subject that is considered by many to be geek-favorable. this includes comics, books, technology, etc.
i was done with comics, so i never expected to geek out when i heard about the Xmen movie, but i still reread every issue i had in like 3 days!!
by ben dover Hugh Gass July 14, 2011
37 26
 
4.
To engage in a conversation of a highly technical nature, typically with some other members of the party you are with, completely (and usually inadvertently) alienating others in the process.
We were having a great conversation about how bad Windows was, when suddenly Bill started geeking out about assembler code on a PDP-10.
by ke6isf September 09, 2004
137 129
 
5.
The act of engaging in intense and excited conversation over a highly technical topic or otherwise geeky subject. The term alludes to the intimacy of a makeout session, wherein the participants relish in one another's expertise in the subject.
The two wanted to geekout when they realized they were both huge fans of battlestar galactica.
by asherp August 27, 2008
6 6
 
6.
1. To participate in or talk excessively about a current interest or obsession which is not part of mainstream culture.

2. To enthusiastically share details about a current interest which is of little or no importance to your audience.
She told me not to geek out about capoeira unless I had something new to say.
by Julie Halsema April 20, 2006
72 84
 
7.
To go Fuckin crazy and lose control physically and mentally after smoking marijuana. Basically being WAY to high and not being able to control yourself.
Yo i hit that Kush man and I Geeked out soo hard. Random laughing and saying bullshit, I couldn't do shit man, I was waaayyy to smacked. Damn I cant geek out like that any more haha.
by chillin B February 09, 2010
26 57