Honestly, thinking about licking ass never really did too much for me before. Lately though things started taking a 180 for me. When I view porn now and see some of these great shemale ass shots, I get this driving urge to stuff my face down there and pleasure them. As for who, I couldn't pin it down. In general, as long as it looks nice (and clean) down there, I'd be willing to give my tongue a workout