Try to figure out their gender first.
From Create Your Own Story
You sit up and look around a little bit, spotting a pair of panties a couple feet from the closet. So it's a girl.
Now you're really turned on!
You think for a bit, and gesture for the girl to come out. Wow, what a pun. She doesn't at first so you call her out.
"If you wanna see my naked muscular body you should come here you know!"
The girl hesitates, but out comes a timid Lydia. Her hips are curving nicely for her age, and her breasts, while small, are already appealing through her pyjama top. She left her pyjama bottoms in the closet, giving you a good view of her naked, glistening underaged cunt.
"Am I that hot?" You ask.
She blushes profusely and hides behind jaw-length brown hair.
"What were you doing Lydia?" You approach her, baring your throbbing spear at her. "Be honest."
Her eyes widen at the sight of your throbbing rod, inspiring it to harden even more as she timidly speaks. "I saw it while you were sleeping, so, um, I touched it..."
She's barely as tall as your chest and she did that? Wow. You're both perverts.
"And then I ah, played, with myself... And you woke up..."
Her eyes dart between your eyes and your cock. You lock your door, and her eyes widen as she blushes furiously.