Although nothing really sexual happens in this story (that would be a little messed up), nudity is involved, so I figured I would post it in this section to be safe. I had just turned 12 a couple days ago, and Sarah was 15 at this point. We did tie-ups pretty regularly when our parents weren't home, with me getting tied most of the time (and loving it). This was the first time we were home alone since my birthday, and I wanted to be tied up. Sarah had just gotten out of the shower, and was in her room. I walked in without knocking, only to find her completely naked.
"What the hell, Amanda?" She yelled at me.
"Sorry," I said. We hadn't seen each other naked before, so this was why she was mad. "I just wanted to be tied up."
"How would you feel if I walked on you without any clothes on?" She asked me.
"A little weird, I guess. But can you tie me up?"
"I think I should tie you up naked, so that you know what it's like for your sister to see you like that."
She had a point. I wasn't too sure about it, but then she said she wouldn't do it unless she could tie me naked. I agreed.
"Go into your room and take your clothes off. I'll go get the tape," Sarah ordered. I walked over to my room and got undressed. Sarah came up and walked into my room.
"The difference is that you are going to have to walk through the whole house naked," she said. I crossed my wrists behind my back so she could tape them together. After that, we walked down to the basement, making sure to pass by all the windows. I'm pretty sure the neighbors saw me, as well as a boy who was my age that lived down the street. I saw him skateboard by and look in at me.
We got down to the basement, where she had me get on my knees. She taped my arms to my back around the elbow, going down my forearms a little. Next, I laid down so that she could tape my legs. She taped them from ankles to middle shin, then the upper legs a little. Finally, she taped my mouth.
"That's payback," she said and left. I laid there for a good while, and by the time she came and got me, I was freezing.
"Next time you walk on me, Alex (the boy from down the street) is gonna get to see you like this," Sarah warned.