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1.
See nerdgasm

To over-react to something nerdy; a video game release, a new movie with a hot female celebrity envolved, etc.
"That Ninentdo Wii thing really started a dorkgasm on the Vestibule."

P1"Dude, that girl is sooooo hot. I can't wait to see Scary Movie 4!"
P2"Have a dorkgasm over it at your own house!"
by Torgo Rouzdouer April 27, 2006
 
2.
outside of porno and hentai, it's the closest thing to a true orgasm geeks, nerds, etc will experience, occuring when they are exposed to information or ideas pertaining to their favorite subjects (includes games, anime, etc...)
(Example of a partner-induced dorkgasm)
Geek: Pixar should join up with Studio Ghibli!
Nerd: ...Ooh!
Geek: Dude, what was that?
Nerd: I just got a... dorkgasm!

(Example of a self-induced dorkgasm)
Loser: I love Trigun and I want to make a Warcraft III map out of it.

Examples of information-induced dorkgasms can be found at places like worldofwar.net and rpgamer.com
by Garnet Red February 16, 2004
 
3.
Noun. An orgasm over something exceptionally and unequivocally nerdy, including but not limited to:
a.) graphing an interesting function on your graphing calculator.
b.) Laughing too heartily at a chemistry joke.
c.) Getting a discrete mathematics problem correct on the first try.
Ben basically had a dorkgasm when he spotted Perseus in the night sky. It was awkward for everyone.
by Cartwheel November 15, 2011
 
4.
When a person is exposed to nerdiness for hours at a time then cums his pants at the height of the nerdy action
dude eugene had a total dorkgasm when he saw star trek
by yourmomsuckedmydick December 11, 2010
 
5.
The act of nerd obsessivly masturbating over a peice of technology they want.
Guy1 "dude did you see that HD camera?"
Guy2 "Hellz ya I got a dorkgasm over it!"
by RobScheflo October 26, 2007