Vicious mother sees her son fuck with his girlfriend

Her son has returned home to spend a few days at Christmas and she can't resist being attracted to the groans that leave her room at night. He wants to see his son fuck with his girlfriend and what he is doing is sneaking around, staying at the door and having a look while masturbating. Perhaps the next step is to fuck him directly, but for the moment he does not dare, so he is content to see his son's good cock entering and leaving his girlfriend. She enjoys imagining that that cock drills her too and that she runs inside.