You're over at your friend's house, waiting for him to get back. His mom is home, tidying up as usual. She seems to be showing off her perfect round ass-- wait, what? Since when did you ever think about her like that? But now that you are, you can't help but notice how attractive she is. She quickly takes notice of your cock, now rock hard in your pants. As she guides you to her room, she strips to nothing but a tiny purple thong. She takes your cock out of your pants and starts going at it, expertly moving to make you cum fast, with a perfect view of her sexy big ass.