Of all the great things about Peggy, my favorite, and I think hers, is our sex life. I mean it is a rare night that we miss a hot roll in our big bed,...or on the kitchen cabinet, the floor, the shower, well you get the idea. It seems we both are perpetually horny and very experimental. We will try about anything.She is built great, slim, nice breasts, great ass, I get turned on just looking at her. Unfortunately so does every other male we know almost. Especially when she gets all decked out in. "Yeah?" Are you ever gonna tell Mom and Dad you been sleepin' with Beth?" My mouth dropped and I stared at my sister. She turned, looked at me then her mouth dropped. "OhmyGod! You really are sleepin' with Beth! I thought I was imaginin' things. Figured you'd tell me what was goin' on if I said that. Alex tell me you ain't..." I swallowed hard and tried to think of something to say. "Alex, lie to me. Say something."I opened my mouth and still no words came out."Oh my God, boy! Anybody find out,. About 15 minutes later they came out all refreshed and had nothing but towels around them so I jumped up and went to shower. To my amazement when I came into the room they were on their bed in a 69 position and I was stunned and for a moment just stood there watching and getting the most enormous hard on I have ever experienced. Terri looked up at me and said do you want to join? Again never having experienced a 3-some I said ok and jumped on their bed and just did what came naturally. They. "Eugh,that's dirty.Why does he do that to you?"Chris stuck his tongue at me again and said,"No it aint,it's well good.And he does it 'cause he likes to see my face with his spunk on it,says it makes me look sexy.'Sides,it's only dirty if you don't like it,an' I do like it,lots,so there"Crikey,I was learning all kinds of stuff off Chris.And I have to say thinking about his step-daddy doing that was giving me such a tingly feeling,in my tummy and down there.Then Chris shoved his hand between my.