He groaned. His ankle restraints were tightened again. “We’ll try this one more time” the teacher told him. This time, as the water was pumped...into his ass (a little more forcefully I might add), Robert clenched his muscles and held it in. “Good!” the teacher exclaimed. She pumped again and Robert felt his lower belly begin to expand. She pumped again and he began to feel an urgent pressure against his lower abdomen and ass. “Now remember Robert, it is absolutely imperative that you gold this. Elaine knelt in front of Barbara and putting her fingers in Barbara's knicker slowly peeled thm down till the first signs of Barbara's pubic bush came in sight. Barbara was watching Elaines face to see the reaction, first a smile then as the knickers came lower and her bush was fully revealed a gasp of pleasure before finaly removeing the and handing them to Lynne. Elaine went to lick her pussy and Barbar felt the enormous tits bounce against her stockinged thighs and elaine felt the taught. "You don't like what I'm wearing?"He smiled and looked down into her eyes. "It's fine, sexy even, for a night out at the cinema. Tonight though is about sex and I want you dressed in something that will please me."He turned and pulled out and elegant box. "Go upstairs and put these things on." She took the box, smiled with an amazed look on her face at each of us in turn and then literally skipped out of the room.He came over and locked his eyes on mine, "Scared yet?"I nodded, once and. I didn’t really know the extent of their relationship, but it seemed a safe bet that both of them knew exactly the geographic location of each other’s clitoris and what it took to bring it to a satisfactory orgasm when there were no boys around to take up the slack.Once she knew that Sue and I were doing it fairly regular, she started rubbing her twat on my knee or elbow to remind me that she was all female and eager to fill any needs that might arise in Sue’s absence. One Sunday morning, I was.