Dirty Stephi

Get on the couch and tell him to sit back and enjoy the show. Only, it's not the TV he'll be viewing... it's you. With him in a seated position, straddle him, then place his hands on your hips to keep you secure, and lean all the way back so that your head is down by his feet. You can put your hands on the floor for extra support, then rest your feet on the back of the couch while he moves in and out.