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!"
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!
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
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.
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
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!"