'Accidentally' show her your rock hard cock

You figure it's best if Macie thinks its her idea. For that to happen, you need to get her to accidentally see you naked.

You know Macie will be in her room, headphones on right now, so she won't hear you in the shower.

You leave the door unlocked and take a quick shower while jerking off to the thought of your sister. As you step out of the shower you try and push a thought into her head.

You need to use the bathroom, now!

Seeing how there was no sharp pain in your head, it must have worked. You shed your towel and start jerking off your 8 inch cock.

Macie barges in, gasps, and freezes there on the spot.

"Um....Uh..."

She doesn't know what to do, and can't take her eyes off your throbbing cock.

"Sorry!" She says, running out of the room, "I'll use the other one!"

You close the door and smirk knowingly. This looks like it'll be easier than you thought.