We continued on our joint venture, thrusting - massaging - stroking - slapping (her pussy lips, my balls). She suddenly said, "I'm ready to come - try...to stay with me!" God, I was going crazy with lust. What an excellent experience.We continued on our merry, sweaty way until her breathing was intensifying. I figured she was about to explode. As soon as I'd processed that, Bonnie yelled "Cum on my pussy" and she screamed! I was right with her, having kept myself on the edge for several minutes.. "Have fun ladies," he said as he held the door for us. "That's the plan!" Lisa said as she was the last one through the doorway. Behind the door there was a short hallway with doors on either side. Some doors had signs on them indicating the room was in use. Lisa found us an available room and we went inside. The room wasn't big, but it was big enough for our purposes. It contained an armless easy chair and a twin-sized bed. A mirror hung on the back of the door and a flat screen TV and DVD. Minutes later, Laurie’s entire body began to spasm, as she lifted her ass right off the bed and thrust the dildo deep inside her and held it there. Her mouth was open in a silent moan as she collapsed back onto the bed and withdrew the vibrator, turning it off. “Oh, God!” she murmured repeatedly to her sister.“Wow! That was really something!” commented Cory. “Let me try that.” She reached for the small vibrator in Laurie’s hand.“Are you sure?” asked Laurie. “What about this afternoon?”“I’m not. Carol immediately spotted her, smiled brightly and began to approach. Ellen waved her away, signaling that she merely wanted to watch. Carol resumed her work with the students.Controlled chaos was an apt description. All around the room, small groups were busily working, talking quietly, and writing equations on whiteboards. The leadership of some, and the rapt attention of the others, warmed Ellen's heart. Many of the students waved to her when she was noticed, but they didn't stop their work..