Damn, what a great ass my sister-in-law has. And she's wearing no panties.

I was alone at home with my sister-in-law the other day when, suddenly, I walked into the living room to watch TV and I saw her there on all fours next to the TV. What a great ass. But I was actually looking at her pussy because the slut was not wearing any underwear. I couldn't help but go over and offer her my cock to see if she wanted it...