This is more on the perverse side of things, and not really strange. When I was aboard ship in the Navy, the guy in the rack across from mine used to "enjoy" himself a little too often and he was not shy about it. He usually had some piece of clothing sticking out of the curtains (at least they were closed) and it would be moving back and forth like there was no tomorrow. He did this at least two or three times a night, regardless if there was anybody around. The funny thing is that this guy's last name was "Cummings"...
Then there were the dancers in Hong Kong that could give exact change without using their hands...
