Leaky Valve

A boner tells you a man is ready, but dripping precum tells you so much more. When his love ooze starts to flow, take hold of his rigid cock by wrapping your fingers around it and gently rub your thumb on the wet glans, round and round. That should drive him wild. It's even more fun if he's bound and entirely at your mercy. Then you can really make him work and wait before he cums.