I am a divorced mother with a fourteen year old son. We get along quite well. He is good looking and very shy. One day I happened to see him in the kitchen after a shower in a towel. I thought that he looked cute, and I teased him about being shy, saying how no one would see him if he didn't bother covering up. Well, he slipped off his towel, and there he was, naked. I had no problem with that, but he quickly got an erection. He looked very embarrassed, but I could see that he was also quite excited to have his penis that way in front of me. I just told him how nice he looked, and he excused himself and got dressed. Since then I have made a few casual remarks, encouraging him to be nude around the house, but he has been too shy to do so. I must admit that I do feel a tiny bit guilty as a mother for enjoying seeing my son, especially aroused.