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A nom so great it gives you an orgasm.
That orange just gave me a Nomgasm.
by WWAWWAJEEDSDSJo May 15, 2011
When something tastes so good it feels like you are having an orgasm.

The first known occurrence of this phenomenon came spreading jam over a "stripy strip", wrapping it around a cube of chocolate and dipping the whole thing in sherbert.
Oh man, this burger is phenomenal I think I just nomgasmed.
by norm959 May 09, 2008