Ass.

Lick my ass." you finish, a wide smirk spread across your face as you guide your sister into a laying down position.

"Yes Ma'am. " says Kiera, her face still red from embarrassment. You can't really blame her, I mean you would be embarrassed too if the roles were reversed, but you can tell by the fact that she is practically dripping from excitement that she is loving this. Why didn't you do this sooner!?! You smile down at her as you raise your ass to her face, and slowly plant your asshole over her mouth.

"Get to work slut. " you command and you swear you can feel a shiver coming from her as she immediately does what she is told. Her tongue shoots out of her mouth and pokes and prods your tight pucker with as much enthusiasm as possible, her hands gripping your thighs in an effort to pull you farther down on top of her, and like a good Mistress your more than happy to oblige.

"Mmm, you like being talked dirty to don't you you big slut! Yeah, lick your little sister's tight little asshole. You belong to me now don't you? " you say between your moans. Your own hands reaching down to pinch and slap Kiera's firm breasts. Each little slap gets a wimper from your sister as she continues to do what you commanded her to do, and damn is she doing a fantastic job!

"Keep going Kiera, I'm so damn close! Get your Mistress off!" you practically scream. You give her nipples a good hard pinch as you reach your peak, having one of, if not the, best orgasms of your life. You move to get off of her, but it's as if your legs became jello and you barley make it off your sisters face without falling off.

"That was absolutely amazing Kiera. We should have done this way sooner. " you say softly as you wiggle to get underneath her. "You definitely wore me out, I don't know if I can continue. "

"You don't have to get me off Hayley. I came plenty of times. Let's just get a little rest. " she says as she kisses your cheek and lays her head on your shoulder.