Sheetal told me that they knew of mine sexual adventures. I was shocked and little proud at the same time. Sheetal took out some rope from her purse. ...hat was she going to do next?Sheetal told me to close my eyes. I closed my eyes and from behind somebody put a blindfold on me. Suddenly I felt my hands and feet being bound by rope. I hear the door being locked. I asked Sheetal, “Ma’am, what is going on?”. She said, “We are going to have a foursome with you. If you do not do so, we are going to. "How strange," said Ohai, "that they should come here."Just then Ohai's mouth opened in a scream, as she stood and began to fall forward. Marz leaped forward and caught her as they both fell through the bridge, together.Marz was on the floor of the lab as he opened his eyes, to see Ohai falling towards him. She was locked in a seizure. She screamed for help as her systems shut down due to sensory overload. In other words, she fainted.Marz caught her gently as she slumped into his arms and he. Her fingers are now barely touching, each focusing on stroking the walls of my pussy and relaxing it into further submission. They slide out a little before being joined by a third finger and creeping back in again, millimeter by millimeter. At the halfway point, she wiggles them around, sending tiny shockwaves through my body. I begin to cum. The stars swim around my line of vision and begin to multiply.I know the tightness of my pussy has been far too powerful a temptation for her. This is. "I'm coming Billy" she gasped, "Do it harder, harder Billy, fuck me, ram your cock up me"I felt myself building up to it as well as mum surrendered herself to her pleasure, gripping her bottom, I heaved myself savagely into her wetness and she screamed, it was a long howl of sheer pleasure, animalistic almost and she bucked beneath me, lunging herself back up at me as I started to come,She felt it immediately and opened her eyes,"Look at me Billy" she gasped, "Look at me as you come inside me.