2T4U/Aaron/Wake Missy/Take her back to your room
“Just come with me!” You tell her, grabbing her by the hand. She willingly follows you out her door and over to your room, now seeming to be rather excited about whatever it is you are going to show her. You close the door as soon as you are both inside, and then quickly lead her over to the middle of your room.
“Ok, I have to take off my pants in order to show you. It is something weird about my privates.”
“Weird? Like what?” Missy asks, not really seeming to object to the idea of you taking off your pants in front of her.
“I just gotta show you.” You say, grabbing your pajama pants and your underwear and pushing them down to your knees and then allowing them to fall to the floor. You aren't really supposed to do this, but it isn't really that big a deal. It's not often, but you do still on occasion take baths together with her and Tiffany. You will get into a lot of trouble with mom if she finds out you took off your pants in front of Missy when you weren't in the bathroom, but you are sure she won't tell.
Missy starts to step closer to get a better look at what she is supposed to be seeing. Your wiener is normal now, but as soon as Missy starts getting close to it it starts to move and get hard again. “Wow!” Missy exclaims. “How did you do that?” She looks up at you excited. You are really glad you decided to show Missy. You just knew she would like it.
“It just started doing that this morning.” you respond."I don't know how it happened, it just started doing it on its own."
"Wow!" your sister says again. Missy starts taking a hesitant step closer, reaching out her hand toward your hard wiener like it is a dog that might bite. She gets within 6 inches of it and then nervously pulls her hand back and looks up at you. “Is it Ok to touch it?”