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The feeling you get after the first mouthful of a drink of Fanta.
Drinking that Fanta just gave me a Fantagasm.
by MrSuntail June 12, 2018
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The culmination of an intense Fantasy Football draft that leaves the owner on the verge of orgasm.
My team is so sick this year I am going to have a Fantagasm all over my first opponent.
by Colonel Sack Seam August 11, 2010
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