Incest Seduction/Push under Kim's yoga pants
Kim just wrote you a blank check, and you intend to cash it.
Your fingertips slip under the edge of her yoga shorts. Her supple yet firm ass greets you warmly. As she purrs in approval you are instantly aware that, besides your digits, there is nothing else under there. She's not wearing panties or anything else that could obstruct your probing fingers. As your dick lengthens even more you almost stop, then remember what your sister said, and continue lower.
Kim's shorts bunch up on your knuckles as you push further, dragging them down her ass. The tips of your fingers eventually dip down over the bottom of each of her ass cheeks simultaneously exposing all of her ass to the air. And you're still waiting for her to say someth-
"Hey, Zachery..."
Kim whips her neck back. She didn't say that.
You turn to look behind the couch. Dawn just walked into the room!
"Oh, uh, hey sis!"
Kimberley is struggling to push herself off of your lap, her butt rising into the air. But you've still got your hands planted on her bare ass. What now?
React fast! Push Kim onto the floor before Dawn can see her.