Just when I was done, two of my classmates came strolling along. They waved and smiled. It was during the summer so the two girls were wearing tank to...s and short shorts. Anyways, they were probably the two most beautiful girls in our grade and I had always dreamed of fucking them. The came in just when I had finished and just started to chit-chat. I invited them inside for a drink and they agreed. We were all sweating, as the temperature had risen over 110, and the cokes i brought out really. I had never taken a plug that large before.As Dr. Johnson pressed it slowly into my ass, I relaxed and focused on accepting the plug inside me. I felt it pressing against the walls of my ass and filling me. When it was in, Dr. Johnson slapped it gently and tugged at it to make sure it was securely inside me. I moaned slightly and Master reached out and took my hand. I squeezed it, grateful to have contact with his flesh. The doctor said, “Ok. Now I am going to take the reading of the pussy to. .I suppose none of the other folks would have him in the house..haha."You're babysitting girl" he said "the folks are off in town for the night."I had wanted to go and meet up with my pal Anne and was not best pleased to be finding out this news....Before I realised it I let slip a curse word.."Fuck it" I said and clapped my hand over my mouth.Uncle Timmy looked shocked and raised his hand to me..."Don't you be hitting me Uncle or I'll tell the mammy"He thought for a moment and said "Not if I. " Kate whispered. After several minutes Kate stood up "I have to rinse off." And she ran to the pool and got in. I followed. We both swam around for a few minutes then got out. "I can't believe that I just did that. Please don't be mad at me. Don't tell anyone. Promise." Kate pleaded. "I promise Kate. I thought everything would be okay?" I quizzed. "It is fine, I enjoyed it more than you will ever know. I guess I am just a little freaked out." Kate said as we went to the office and changed.