The first part of this was such a turn on seeing his soft cock bulge, then tenting his playboy boxers. I could play longer with him in his undies. Maybe make him cum in them. Leaving him, in his wet sticky mess. Before fucking him, possibly leave them on while i did. The only thing i wouldn't have done to that boy. Is wear a condom. Slave boys should feel their being bred. When he's finally released. He'll leave minus his favourite undies. They're the masters trophy.