A Bet Gone Wrong?

Three hours of having the vibrating butt plug up his ass was making him horny as hell. According to the bet they had made, he needed to last another hour without ejaculating. He considered himself fully and completely heterosexual, he had never really thought about receiving pleasure from something rammed up his ass, but there was no denying that his body was enjoying this. As the bet enters the final hour, he starts to have doubts about winning. He can feel his balls tightening up and getting ready to blow. The precum has been flowing all this time

His friends can see what is happening, as well. They can see his hols spasming around the big plug in him. They are cheering him on, telling him to relax and let his jizz fly. They can't hide their excitement in watching him and their eagerness for him to nut. After all, if he blows his load before the four hours are up, they all get to turn his asshole into their pussy. He will become the group's cum dump, because of a bet.