I looked at my sister with her short shorts, and her halter-top. Julie turned 18 today, and was showing off. Mom had never let her wear her shorts so short or so small of a halter-top in public. Once in a while she would wear them around the house, but never outside or in public. We were out in the back yard, and even though it wasn't in public, it was outside.
I wanted to put her over my knee or pull her hair, wrestle with her, anything, but I wasn't allowed to. We used to do those things, but mom made us quit when Julie had started to develop. For the last 6 years all I could do is fantasize.
I remember feeling Julie's developing tits and ass, pretending to wrestle, and how they felt. Every time I pinched her or spanked her she used to giggle. I remember mom used to get in between and stop the wrestling, and how great her big tits felt. For awhile mom seem to enjoy the wrestling, but one day she made us promise not to do it any more. She had felt how hard it made my cock get. She never said anything, but she turned beat red. We tried to sneak it in, but we all ways seem to get caught. Mom watched us like a hawk.
I think mom was worried we would do something improper. When I think back to those days, mom used to dress differently too. She used to where short t-shirts to bed, halter tops, shorts, now, flannel gowns, oversized t-shirts and sweat pants
I would lie in my bed a night, stroking my hard on thinking of feeling Julie and mom's tits. I fantasized how they would look naked. I could just imagine how Julie looked like mom did 20 years ago. Julie was full figured, but did not look fat, with enormous tits full thighs and a round ass. Mom was 30 pounds heavier, but had filled out the tits and ass proportionately.
When I stopped my fantasizing and daydreaming, I noticed Julie had her practically bare ass in my face. I threatened to paddle her 18 times, and she just wiggled it and walked over to a chair. I didn't know that mom was close enough to hear. When I turned around and looked mom in the eye, I expected to be chewed out, but she didn't say a word.
I started daydreaming again about spanking her, maybe even pulling her shorts down. She only had on terry cloth shorts with elastic to hold them up, and it wouldn't be difficult to get them down. They were so short she couldn't have panties on. Just the thought of seeing her naked ass and pussy made me hard as a nail.
Then I noticed mom staring at me. I had on tight jean shorts on, that showed my hard on, and mom was staring straight at it. I looked at her eyes, but she did not see mine. When she finally looked up, she looked flustered, and said " I have to go to the store, I will be right back.
Julie was standing by the back railing with her back to me. I saw mom leaving, and I decided to find out if Julie would say anything. I went up behind her and swatted her butt.