And she went on: “Do like what you see? Wanna play with my tits? Touch that gigantic ass of mine?”All I did was starring at her. With a mixture of...excitement and desperation. She seemed to enjoy herself: “Not today, my son. Not today.”Then she left. With the door open. I just sat there and stared. With my hands on my dick. Jerking that fucker off once more. Then I fell asleep. Dreamed some nice weird shit about mom and me. About our first time.So the following week, something had changed. Mom. There was some kind of cock-up over the papers for one of the other exams, so we all started late after sitting looking at the blank back page of our own exam papers for about twenty minutes.No sooner had the reading time finished and the actual answering time started, than someone at the front of the hall had a dramatic nose bleed, resulting in much rushing about, and the incongruous sight and sound of an invigilator with a mop trying to clear the gouts of blood off the floor before someone. Trish is wearing a pink triangle top with ties at the neck and back. The G-string bikini bottom has ties at the hip."Ready, Luke? Trish pushes off the edge and I follow close behind. Catching up, I grip her shoulders and dunk her. Though this time she comes up, pressing her backside into me. Her tan skin and toned body shimmer in the sun as the water cascades down every sexy, delectable curve.Giggling, Trish rubs her cute heart-shaped ass against my cock and turns to face me. Putting her finger. He was really stretching me but soon he popped in. He groaned from my tightness and heat. Pushing in he was able to get deeper. Slow in and out strokes helped. The reality of me being his Mother was not slowing him down. He hit bottom with about an inch of his big cock left to go. I felt so full and I grabbed his ass to urge him on. This was so surreal and yet I knew this was what I had wanted all along. I didn't care about how taboo this was. My Son was fucking me with his big cock and I was.