Your dad does.

You feel your dad's cock swell and throb in your hand. You suck softly on his bottom lip and it sends him over the edge, spraying your soft stomach in a explosion of his alpha stud seed. You feel your tiny cock explode inside your sister's panties and you brainlessly back up on your dad's finger, milking ever last squirt from your hungry hole, every nerve in your body humming with delight.

"Well, I guess that proves you're not a sissy," your dad says contemptuously, scooping your combined cum and feeding it to you with his thick fingers. Instinctively, obediently, hungrily you swallow it down, savoring the strangely alluring taste. You immediately regret it, hanging your head and blushing, but your dad plays it off like nothing happened.

"Well since it's just us guys here, why don't you come downstairs and we'll watch some porn together?" You don't exactly feel like one of the guys in your sticky panties and the taste of cum still lingering on your tongue. You still can't meet your dad's eyes as you ask quietly, "shouldn't I change clothes first?"

Your dad cups your ass and gives it a gentle squeeze, forcing out a decidedly unguylike whimper. "Don't worry, sugar. You've proven EXACTLY how manly you are. A dress won't change that. Let's go downstairs, sweety." His words don't exactly fill you with confidence, but you don't exactly mind his hand on your ass. You tell yourself that the sportsballers do it all the time and allow him to lead you back downstairs as he sits naked, shockingly still erect on the leather couch.

"Let's see what we have to watch..." your Dad says knowingly, and punches in a code to the remote that switches over to a video of a sexy sissy slut pouting and preening in the mirror. You feel your puffy nipples ache and your cock stir in your panties...then you recognize the sissy!

"Surprised, darlin'? See I put the hidden camera behind your sister's two way mirror once she moved out because I knew it was only a matter of time before you'd be trying on her clothes and making kissy faces in front of it." You want to argue, but you are distracted by how fucking hot you look trying on your sister's clothes and making kissy faces that you can't find the words. You gulp as you realize the best is yet to cum...

"So why don't you be a sweet sugar and sit on Daddy's lap while we watch?" His cock is still glistening with your slick spit. If you sit on his lap you know he's going to fuck you with that monster cock and make you his sissy. But, well you're sure there's a good reason not to do that but you're struggling to think of it...