Universal Acceptance/Stay up and sneak into your sister’s room to try this sex thing out

You nod and watch as your mom leaves the room. You lay there for a little bit but then suddenly you have an idea.

"I should try this sex thing out right now, thanks to my power mom won't notice what I'm doing and if dad finds me I can just do the same thing to him as I did with mom and I have a bunch sisters that would be perfect to test this out on,"

You quickly realize you said that out loud and then clamp your mouth shut as if that will somehow take back what you just said. Then you shrug, not like it matter anyway if they heard me or not. You creep out of bed and open your bedroom door. You then tiptoe across the hall until you reach the door to one of your sisters rooms.

You open the door to see Trish sprawled across her bed, the covers had been tossed aside leaving her almost entirely naked except for her white and pink panties. You slowly walk in to get a better look, quietly shutting the door behind you. You turn on the lights and you see your sister stir before settling again. You walk over to her and run your fingers through her long chestnut brown hair. Her face looked delicate and peaceful as she slept. You turn to her lower half and move your hands towards her underwear. You carefully pull down her panties to reveal her vagina in all it's glory.

You're then surprised to find your penis tense, you grab it with your hand only to find that it has become hard as a rock. You're about to call your parents for help before you remember what your doing. You turn to your sisters sleeping form and line your now hard penis up with her entrance. With a swift shoving of your hips you sink your penis into her vagina. You just stand there with your dick stuck inside your sister's vagina, reveling in the pleasure. Your penis feels incredibly warm as the walls of your sister's vagina begin to squeeze this unwanted intruder. Then you hear a quiet squeal as your sister's eyes shoot open.

"Don't worry, this is normal although you really need to be as quiet as possible," you say quickly

Your power works it's magic and your sister closes her mouth. You then begin to move your penis in and out, you don't know why but it feels right. You slowly increase the speed, failing to notice that you penis is being dyed red due to the blood from your sister's vagina. You just keep pistoning her young vagina as your primal instincts guide you. You feel your penis begin to tighten and it doesn't take long before your penis begins to pulse and you shoot out your semen into your sister. You let out a moan as your penis goes soft inside of her. You pull out your penis and watch as this thick white stuff leaks out of her. You turn to leave before you remember something and turn around to look at your sister.

"Telling mom and dad isn't a good idea by the way, it would really hurt them," you say

She just nods at you as you turn to leave.

What should I do now?