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sudden expression with classic italian flavor of something sexually desirable or abnormally sexual attractive that it can be used for masturbation purposes. It has to be prononced with italian accent on second syllabe like well-known word bravissimo.
Person 1: Dude, look at this chick
Person 2: Oh, that legs, that boobs...Fappissimo!
by epischdorf January 12, 2012