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1 definition by emodot

The look of sheer ecstacy on one's face while playing a guitar solo - usually triggered by a long, sustained note or bend. Looks very similar to the person's o face.
"Dude, check out Miles. He's having a guitargasm."

"I was playing a JEM through a Peavey JSX the other day. I almost had a guitargasm on the spot - didn't even have to take me out to dinner."
by emodot December 09, 2005