Your step-mom asks you to come to her room when you have a chance. She says that since she is going to the Bahamas with her girlfriends next week, she bought some new swimsuits, but she would a second (aka. male) opinion. You agree because why wouldn’t you watch your hot step-mom try on bikinis. She goes into her closet to change and shows you a couple of bikinis. Her ass looks so good that you can’t help but pitch a tent. She eventual notices, and becomes embarrassed. She says that since it’s her fault, you can take care of your boner. You pull your dick out and start to stroke. She turns around and shows off her ass some more. After teasing you for a little while, she expresses impatience that you haven’t cum already. She suggests doing a bit more to get you off—but no sex since that would be incredibly inappropriate. The two of you get on the bed. She grabs a bottle of baby oil and squirts the oil over her bare ass. After rubbing it all over and getting lubed up, she straddles you and slides your dick between her ass cheeks. She jerks you off with her booty. It feels amazing! Although she didn’t want to do anything more, feeling your hard cock against her becomes too much to resist. She says she can’t take it anymore and shoves your dick in her ass. She rides you hard and talks dirty about how you’re fucking mommy. After you cum in her ass, she says that although fucking you was a lot of fun, it’s probably better if it remains a secret