dirty gearshift
when a man puts his penis in a womans ass like the nozzle of a gas pump, then urinates in her as if he was filling a car with gasoline. then he puts a dildo in her ass to act ass the gas cap. he then sits on her back while she crawls around making car noises and he moves his dick around like a gearshift.
yes! my girlfriend wants to do the dirty gearshift with me tonight! vroom vroom!