When I went to my brother's house, my brother's wife was alone, as they had been fighting over my brother's affair. While I was drinking and giving her advice, she said, "Why don't you stay over tonight?" When I refused, she grabbed my dick and said, "Am I sexy?", showing off her cleavage and panties! When I said, "You're here, aren't you?" she whispered in my ear, "This is payback for cheating on you," and I couldn't help but get an erection! And then...