Sarah has some questions

"So I have some questions for the two of you." Sarah's voice had lost none of it's commanding edge. Emily looked over Alex's shoulder and hears her little sister moan as Sarah withdraws the strap-on from her butt. "First." Sarah reached over Alex and grabs Emily chin pulling her head down until her eyes are pointed at Alex's crotch. "Clean up slut." Sarah released Emily's chin. Emily considered for a moment before leaning down and lifting Alex's skirt. Alex leaned back to give Emily better access.

The mess of Emily's own cum was plastered all over her little sisters crotch. She unconsciously licked her lips and started to lick the cum away.

"Hmmm. you are going to make an amazing sister." Sarah moaned. "If you can explain why you have a cock and your sister doesn't." Emily finished licking up her cum and pulled her head back. Alex was clearly enjoying the oral attention but moved away from between Sarah and Emily submissively. Emily watched her crawl over to the bed. She managed to get her upper half on it but left her legs and ass to hang over the edge. Emily saw the slight gape of her little sisters ass and felt her cock grow again. "You can fuck her after you answer." Sarah stood over Emily still sitting form.

Emily careful thought about how to word her answer. She had a feeling if she told Sarah about the marker either Sarah would claim it or make her share. "When we moved here Alex and I agreed to finally live how we wanted to." Emily tired it but from Sarah's face she wasn't buying it. Emily changed tact. "I've always had a cock and Alex was always a slut but we never got to express ourselves because out parents were really strict." Emily remembered Sarah's reaction to the **** thing and hoped it was a kink she could use. "We started to play around but only butt stuff, now that we're here we can finally fuck like we want." Emily then went over why she wanted to join the sorority. "But I didn't want to just fuck her and I heard stories about Omega Pi Sigma and well..."

"Figured you could get your dick wet with all the slutty sisters." Sarah finished for her.

Emily felt her cock pulse as Sarah said that. "Yeah."

"Bull." Sarah said walking over and sitting next to Alex. "You see." She reached between Alex legs and started to finger Alex's clit. "I have a cock radar, it is never wrong and at the party it told me that between the two of you, she had a cock not you." Sarah dipped a finger inside Alex with an expression of interest. She found something she agree with and looked at Emily triumphantly. "Plus with that cock and how quick you were to be my bitch there is no way you could have held off fucking this sweet tight cunt until now." She spread Alex's pussy and showed Emily her sisters hole. Emily felt a rush of hornyness and fought against the urge to mount her.

"I... uh... um." Emily couldn't think of a good reply.

"Thought so. Now tell the truth slut."