Lick my asshole, boy!

Wenona is a very fit girl with a very nice ass. She knows of your inclination toward a fine ass and she would like to show off her bottom for you. There's no such thing as a free lunch, though, so there is a little quid pro quo. Wenona wants to watch you jerk off to her ass. This is a win-win situation as far as you are concerned, and you happily start stroking your cock, per Wenona's request. Her booty is right in front of you and she asks you to kiss each of her ass cheeks. Her skin is so very smooth beneath your lips. Really what you want is to have her just sit on your face, but you try to keep yourself under control. She tells you to cup your balls with one hand as you jerk off with the other. You are on the floor beneath her and you have a spectacular view of her girl parts when she pulls down her panties. You see her pussy and her asshole and you have to pinch your dick a little to maintain control. You are so close that you can smell her bung.