On a 7-9, Taylor will take off the towel, if you turn her on

"Tom, you are such a pervert!" she says. She hasn't kicked you out of the room, so apparently, you haven't gone too far.

"Oh, c'mon, Taylor. I can tell your body is very sexy, I just want to see you in all your glory," you say, truthfully. Well, without the 'just'. You'd be happy with more. "You've got me so hard," you finish, rubbing the bulge in your shorts. Taylor's eyes dart to your crotch. She involuntarily licks her lips.

"Show me your cock, and I'll get naked," she offers.

You drop your shorts to the floor and straighten back up. Your cock wobbles, pointing in her general direction. You stroke it gently.

Taylor gasps, her face in shock. Her eyes are very wide, and she can't take her eyes off your junk.

Without switching her gaze, your sister unties the towel. When she drops it to the floor, you groan. Her body is beautiful and curvy, her boobs stand out, capped by fat hard nipples. She has a very sexy round belly and a bald slit. You'd guess she's 36DD-24-36 or so. Rather top-heavy, but not ridiculously so. Your hand strokes a little faster.

Without saying a word, Taylor steps toward you and drops to the floor at your feet. She reaches for your cock.

"I don't know what's come over me, Tom, but I have to have your amazing prick."