The Proposition

i woke up to the exciting tapping sounds dancing across my door, I opened my eyes sleepily, rubbing them with my fingers slightly.

"What?" I called out.

"Hurry, open the door." My sister, Sam called back.

I threw the quilt off my body, exposing my naked self to my room, I threw a t-shirt over my head and pulled some panties on, before unlocking and opening my door.

"I have a proposition for you..." my sister said, grinning at me.

I didn't like it...