From behind

This happened a long time ago. I was just sitting on the couch and watching TV when our neighbors son and daughter walked in we were all 14 and she had a great set of C tits. She said she had been pulling her nipples since she was shown that it would make them huge. They stuck out about 3/4" and thick. We were always jacking off together and this day she said that her brother had watched dad get fucked in the asshole by our other neighbor. He said it was great seeing him over the couch arm and taking a long hard dick in the asshole until it came. He said that as his pants hit the floor and she was nakid too her thin see thru dress on the floor and I just stripped. I asked her why she always wore see thru close? Dad buys my clothes and he is always watching me and jacking off. She then got a new dildo from her mom's drawer. 18" double ended. Mom and dad have used it a few times. He said slide it in my asshole sis. And she used a lube called Cum Lube. It looks like a big bottle of sperm, and very slick. He was bent over the couch and in it went. She said first time he was anally penetrated. He let out a little moan and said he likes it. After a half hour watching her fuck him I wanted to cum so lubed up and she pulled it out and I shoved my hard on in his asshole. Then I fucked him hard and fast as I could. He was pulling on the couch and making a lot of noise and he came hard on the arm of the couch. I just kept fucking him hard. Then I grabbed his shoulders and I unloaded my sperm in his asshole. He was making noise we had never heard. I pulled out and she washed my dick off. He said he wanted to be butt fucked all the time and she was using the dildo on her pussy and she came several times. We got dressed and I asked her to bend over and I could see her asshole and pussy. Great to see, and I told her to do that in front of her dad and mom. She said mom has been fingering her pussy and asshole. And she ate mom out. Another story there, I got to see her tongue at work on the birthing place.