Your Sister? In your body!

You feel your body biting your lower lip again as it grabs your now hardening dick and starts caressing it. You moan pathetically and say "Your penis is all mine my sweet brother"

Oh God it's one of my sisters controlling my body! You say with a bit of panic

Your dick starts to secrete pre-cum and your body moan again and say "I haven't been able to get such a great look at this wonderful penis you have"

You try to shout "Stop it" but to no avail.

You stare helplessly down at your own body masturbating until you feel the familiar pressure building below as you shoot a fountain of cum into the air and onto the floor below. Luckily your sister has the courtesy to clean up the mess she made before moving on.

Once your body tidied up it said "I wonder how my body is doing" with that your body grabbed that book that fell next to you earlier and started to walk down the hall towards your sisters' room but you are unsure which room your body is going to enter