Top Definition
When going down on an obese person, the lower abdomen sags down to cover the genitals. In order to reach the downstairs, you must lift the flap which is called a " Fupa". Once you lift the fupa, you stick your head underneath to go down and you are now wearing what is called " The fupa helmet" because the flap folds around your head like a helmet.
Dude, last night when I went down on Cindy, I totally wore the Fupa helmet.
by titsaflappin August 01, 2011
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