Then as I poured us another drink Tracey started to flirt as usual, with the drink the way she was dressed and the amount of flesh she was showing whe... she started to talk sex I developed one hell of a hard on and having not had chance to fuck the wife in over two weeks I really needed empty my balls. Tracey noticed my 8” cock making a tent in my trousers and giggled then gave it a play full slap followed by a quick grope which nearly had me exploding in my pants. Then Tracey said she did not. Her bikini was actually a little loose in the back and it made things a lot more interesting because when she was standing up straight, the material fell away from her bum and her little cheeks were trembling in full view for any interested male parties.She knew this would be the case because she had practiced it in front of the mirror with Veronica giving her pointers on how to show off her backside to advantage and even allow her nipples to peek out when she was down on all fours with her. All walking around me appraising their find, or prey which felt nearer to the mark.An occasional slap on my ass, my dress being lifted exposing my now ruined but still Sexy Nylon Stockings.Then one of the Guys said.. I think we should use the fallen tree, this little slut looks like she's ripe for it.And with that I was directed about 15 yards to a tree trunk that had clearly fallen in the old storms.It was at a height that lent itself to the purpose they had in mind.One of the Guys was quite. Without saying a word I looked back to see her towering over my ass. It was no dildo; she had donned a strap on!!She slowly began to pump my ass. Going nice and slow to work me in. After about a minute or so her pace picked up. Thrusting faster and faster, you could hear the skin of our legs slapping together as she pounded me. Words couldn’t describe the pleasure I was experiencing. I could voice nothing expect a few moans and the words “oh mistress” Suddenly Mistress stopped. I was so close.