Sister Takes Charge

"What do you think bro, want to cum while being smothered by my ass?" She didn't give you a moment to contemplate what she said, nevermind answer before dropping back down to engulf your face in her butt.

"Come on big bro, submit to your little sister's butt. Admit that I am superior to you both physically and sexually." You were embarrassed to admit it, but your sister's humiliating words were bringing you closer to the edge. Even without any physical stimulation you were going to orgasm. "Cum for my ass big bro." The way your sister said that while looking back at you with a sadistic grin took you over the edge. You blew your load as you looked up at your sister's dominating form sitting on top of you.