1 definition by mongrelssister

To fake orgasm for the manga/anime character Maito Gai from Naruto (otherwise known as a fangasm; but for this specific character only).

The phrase has been coined by numerous fans on fanart and forum communities.
Did you see that sexy fanart of Maito Gai? I so gaigasmed!
by mongrelssister May 6, 2009
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