I bent over the exam table as Jacob pressed his throbbing cock against my ass. I felt him slip in to my tight hole. His hard dick was pushing me open as inch after inch was slowly being buried in my ass. Once he was fully inside me he began to rock back and forth. His dick was hitting my prostate and it was making me precum. I turned over and had him resume his assault on my hole. He was fucking my hole hard by now and then with one last thrust he began to quiver as he shoot into the condom deep in my ass. I removed the condom and save it as a sample for future study. I had him lay down on the exam table as I began to continue the experiment, I started to blow him and jerk him off. I couldn't believe this kids stamina, I was sure he was going to cum again and in a few minutes he was busting another hot load for me. This was definitely one of the most fun experiments I've ever been able to administer and I couldn't wait for Jacob to come back.