You must have muscular buttocks.

Me, tall, muscular, demanding and controlling. Age 53. I envisage this being for mutual fun with me doing all the work (rimming, sucking, ordering you around) and you being as passive as possible for me. You're probably the sort of boy who gets a kick out of being admired for his body but has never let a man touch, let alone fuck him, even though you're curious and wank about it. Send me a pic of yourself. I am only free evenings and wknds. Maybe for regular sessions. Your girlfriend/boyfriend need never know!