1 definition by Flump-Master

The act of flumping involves stuffing a flump marshmallow inside a volunteers bum 'ole and then proceeding to suck it out as romantically possible. Considered to be the most erotic and tasty act of sex.
Hey, baby. Are you down to flump?

Sure, I love me some flumping.
by Flump-Master April 27, 2015
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