I really wanted to go and listen to see if I could hear what they were doing; like for most guys, girls were pretty much a mystery, a very sexy myster....I eased my door open and took the few steps down the hall to the door to Cheryl's room. I couldn't believe it, the door was ajar just enough that I could see all three girls, my sister and Francie and Carla all sitting on her bed and they each had a hand down in their panties rubbing themselves.God, they are getting off, I thought as I leaned. Nervously I went in an knew straight away that tis was something special , so with a pounding heart I started checking out the cubicles , a couple were recently painted , so I felt a bit disapointed , the last one though , I was delighted to find a porno book , BINGO, next to it was a pair of electric blue shiny satin panties , wow, thought I had hit the jackpot .I sat down and undid my pants , reading the book , I started stroking the panties over my throbbing cock , god I felt so dirty and. “OMG! That would be so fun!” Beth said.“Mom can tell you all about it! She has done it a couple of times.” Cindy said as she looked at her mom.“You both can try it tonight. Justin is asking Brad to join the party. So baby, are you ready to get fucked?” Jean asked as Cindy smiled and rapidly shook her head.Just then Justin and Brad walked back into the room. They were both smiling and it was obvious that Brad was now part of the special circle.“Alright girls, it is time to start entertaining the. He continued to slide up until she felt a small wet substance touch her lips, as she licked them to get it off she felt the head of his cock on her lips. She licked her lips again and licked his tip as she did, slowly taking it into her mouth. She let her mouth and tongue continue to pull him in as he slid his entire length into her mouth, almost causing her to gag as he burried his cock against the back of her throat. He slid back out and then buried it again this time her accepting it with.