You knew inviting your bully over was a bad idea, you thought maybe it could better your relationship with him. But instead it only made it worse, now you're standing there helpless seeing your mom turned into a slut for him.
Son, look how beautiful it is! It was your bully who gave me a gift, I’ve been dreaming about it for a long time. I haven't shown this to your dad yet, you first! Look how much your mom loves you!