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
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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 15, 2011
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freaking out over something that could be considered nerdy/geeky and knowing it
I got the lab results back and my thesis was right! I was totally geeking out!

I found a book written in 1813 at work today and it made me completely geek out!
by krista91 July 10, 2009
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To spend an ammount of time discussing geekish things with other geeks, or to participate in geeky undertakings and pasttimes with one or more other geeks.
Geek 1: Wow.. how long have we been talking about World of Darkness?
Geek 2: Hm.. seems we've been geeking out for about three hours now
by Atrian October 19, 2006
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Laughing uncontrollably and in an obnoxious matter for no reason.. or for a reason that is pretty random. Person has been using drugs and is high.
Doug: "Dude check out that book on the table"
Scott: "hahahaha! dude! hahahahaha!"
Doug: "man, stop geeking out.."
by scott April 19, 2004
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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 9, 2004
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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 26, 2004
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