"The ghost of Tissot is watching you masturbate"

You know all those things that you were told when you were young? About sex? Blame these guys:

When you were a kid, did you ever have an adult tell you that masturbation could make you go blind? When you grew up, did you ever wonder where bullshit like that got started?

History is full of sex experts who, as it turns out, were just making crap up as they went along.

Samuel Auguste Tissot (1728 - 1797)

Totally full of shit yet curiously influential, Samuel Auguste Tissot was a physician and neurologist who advised the Vatican. In the 18th century he wrote on many subjects having nothing to do with sex, and perhaps he was able to speak on some of those without talking out of his ass.