Mommy is over at your house and she knows you've been having a rough time with you wife. She knows you never cum to your wifes tiny A cup size tits. She might be a little jealous, and wants to show off her big tits to you so you can stroke your cock to a real woman. She gives you step by step instructions on how to stroke your cock to mommy, even edges you a little bit until finally she gives you a cum countdown and you're finally able to release.