Fucking with my brother-in-law without my sister knowing

His brother-in-law came to visit and rang the bell just as he had just gotten out of the shower. it seemed that the bastard had it all figured out. he was married to his sister and always bragged about being a macho, but what he really liked was breaking men's asses, especially his own brother-in-law's. seeing him only with a towel covering his body did not take long to make him see that he had to take it away. she did so, and with her ass well placed, she couldn't help the temptation to go penetrate him. in fact, it's actually what he had come looking for. he penetrated him hard, he loved to feel his straight man cock fucking his ass, that's why he moaned like that until they finally came.