My Sister and I

100% fiction!

My sister who's 18 likes to dress real provocative and sexy at home mostly when no one else is home but us two. I think she does it on purpose to tease me and make me horny. A few weeks ago we were alone at the house after school like always because both our parents work when my sister called me into her room.

She said she wanted to show me her new clothes to see what I though them. I said ok but thought it was weird because she never did that before. She pulled her shirt off and I was shocked because she wasn't wearing a bra and even more stunned when she slid her sweats off and wasn't wearing any panties underneath either!

She basically stripped naked right in front of me and acted like it was nothing. I said omg you're not wearing any underwear and she said yeah she doesn't like them. Her ass was amazing and her pussy hair was trimmed into a little strip and I could see her pussy lips. She wedged herself into some new jeans and 2 sun dressed each time getting buck naked changing between them. I got a huge boner in my pants so after she took her jeans off and got totally naked again I decided to tackle her and toss her on the bed. I tickled her all over and she laughed and let me have my fun only resisting a little bit. I almost came in my pants.

After that day when ever she'd come out teasing me wearing skimpy shorts or tight sweats I'd always tackle her and depants her then not let her have her pants back. One time I was watching TV with her and she was wearing tiny booty shorts. She had a blanket over her lower half so I said I was cold and got behind her sort of spooning her under the blanket.

She started grinding her butt into my crotch and I got a huge boner almost immediately. I know she could feel it and she was rubbing her butt against me under the blanket. The a little while later she said, 'hey give me your hand for a second'. I said why but did it. She guided it down under the blanket and made me feel her ass. It was bare!

I lifted the blanket and she had pulled her shorts down just past her ass. I said 'oh yeah? Well if you do it I get to do it too' so I pulled my shorts down and let my boner pop out and rubbed it up and down her ass crack between her cheeks. She squashed her bare ass against my hard cock over and over till I felt like I was going to cum. I told her we better stop but she said no and squashed her butt even harder against my dick spreading her cheeks till I started cumming all over her and up in her butt crack even.

Just then we heard the garage door opening. It was my mom coming through the door!! She came home early but normally never comes home early! We were horrified and had no time to run so we scrambled and pulled the blanket over us still lying next to each other spooning on the couch. My mom came in and gave us a strange look for lying like that on the couch under a blanket.

Our shorts were on the ground too!! My Mom looked so confused and walked away with a weird look on her face. Little did she know my still stiff dick was pressing against my sister's cum covered bare ass and we were both naked under the blanket. We were so embarrassed and I felt like dying. Since then my Mom acts weird when she sees us together. I think she knows something funny went on!!