I'm jerking and stroking his bound and helpless cock and playing with him in edging game while massaging and squeezing his balls I'm keeping him on the edge and don't allow him to cum so his cock is sweating with a lot of precum fluid. But unfortunately he finally is able to cheat me and start shooting his sperm load in ruined orgasm so I have to punish him. I waited a moment until his sperm stop flowing and I decided to mercilessly make him cum again. It wasn't easy but finally I achieved my goal and he cum again.