While your girfriend is giving you a blowjob(you must be sitting down) lift your thumb into the air and swing it over her back and into her ass and yell AHHHH like FONZIE
REVERSE FONZARELLI is the newest bedroom party trick the definition speaks for its self
While doing a "Dunkaroo", (when a man or woman dips their head into the icy waters of a keg tub (feet held up by two friends) and stays under water until they feels numb, at which time they must whip their head out of the tub to chug a beer), the participant farts on the two people holding up their legs.
We were all doing Dunkaroos last night and having a great time. Then Nick's turn was up and he did the nastiest Funkaroo, causing me and Casey to vomit into the keg tub.