When a girl is giving a guy a hand party while he is on his back and when he starts to finish she slams his junk into his stomach making him lurch upright and gasp for breath, which causes him to be open to receive a taste of his own medicine.
girl: Hey, remember that fellow who was bragging about soaking that girlshair with dude juice?
other girl: yeah?
girl: Well I gave him a proper downshifting last night.
*high fives*
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi