"Oh yes! Fuck me, Nick!" Susan yells, "Fuck me hard!" I'm pounding into her like a jackhammer. It feels so good to be fucking my sister and slamming up against her firm, round ass. Add to that the thrill of doing it in broad daylight, in the middle of an airport parking deck, and I'm almost ready to shoot my load.

"God you feel so good, Susan!" I pant. "I'm not going to last much longer." I tell her, trying to slow the pace a little. Susan removes one hand from the car fender and reaches between her legs.

Looking around, I'm startled to see a young, twenty-something couple standing...