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.
peter kay: FUDGE?! FUDGE? i'm not made of money! check the weight of em before you put em in! flumps, thats what you want! flying saucers, have as many of them as you like!