About half way through my session, I heard the doorbell ring. With a sudden chill down my spine, I realized that the front door was open with just th... screen door locked, and the way I was sitting I had my back to the door. Whoever was there might well have seen everything! Crap!!! Nothing for it but to answer the door, I figured. I pulled my boxer shorts up and adjusted them as well as possible, pulling the front of my t-shirt down to hopefully cover my erection.As soon as I got up and. Careful not to reveal my "hardon", I pulled the covers over and got between his legs and took his underware off. "Your cock is so sexy when it's soft. Let me make him big", I said as I circled his asshole with my lubed up glove. As I eased one finger in, I slipped his cock in my mouth. I gave his a slow blowjob as I worked my finger in and out. "Sorry, I couldn't resist anymore." "Don't start anything you don't want to finish", he said. "Oh, I'm going to finish. So are you." His cock was rock. My sister slowly walks and lies down on the other side. We say good night to each other and we sleep and we turn off the lights except the bed lights.In the red bed light I could see her ass shape and curve of her hip. I want to put my hand on it but I stop myself. Sad part is I cannot even jerk off in my bed because she would know. My dick is already hard so I go the bathroom but it is already occupied as we have only bathroom. I head back to my room and I see that sister was sleeping on my. Yes I nervously replied...you will now learn to be as good a little slut! "But babe.Shut up" she cut me off and pulled my erection until I had to follow her to her closet..She pulled down a box and threw a pair of black lace panties at me..put these on slut! I did as she demanded..Shecontinued " Now pull them up and stuff that tiny excuse of a package of your behind your thighs! I did and soon was looking like a woman where my penis and balls used to be.. As I was beginning to come to terms.