The first thing that Dr. Phingerphuk had me do was take off my shirt, so that he could listen to my heart. Vacuum pumping was the experiment that he was going to start with. It looked kind of scary, but he told me that it was like getting my dick sucked. The best way to use the pump was with a lot of lube.
Images provided by & copyright collegeboyphysicals.com All models are at least 18 years old. 18 U.S.C. 2257 Statement
http://www.collegeboyphysicals.com/2257.html