Alfred Kinsey is known for his encyclopaedic surveys of human sexuality. He wanted to set up a dedicated laboratory in which to observe the responses of the body to sexual stimulation. Unable to secure enough funding for this project, he instead filmed himself and others in his own attic in Indiana.
“Kinsey inserted a swizzle stick into his urethra, tied a rope around his scrotum and then simultaneously tugged hard on the rope while he manouevered the stick deeper. He paused just long enough to explain to his fellow staff member and camerman why the knob on the end of the swizzle stick posed a problem. “There’s a little flap as you go partly up the urethra that you have to bypass, so you can’t just jam the thing in.”
He was also known to have used a toothbrush. Though there is no word on whether or not he cleaned his teeth with it afterwards.