When my Dad has to go abroad to work, I stay home alone with my mom. We started having sex 2 years ago because she said that with my Dad it was always the same but she didn't want to have an affair. When we are in bed and she wants to cum she tell me: "Do it the way mom likes, son". She loves to take it from behind, a bit rough. Nothing special, but just to hear her moaning at every stroke of my cock, it makes my cock even more hard.