I'll have to modify my thinking. It looks like the only people who attempt hoaxes are men and little english girls. And that doesn't actually help defend men against my premise that they are basically strange creatures with far too too much time on their hands. Adult women are just more sensible and have better things to do.
You still raise an interesting point. Virtually all of the hoaxers have been male. But curiously, in the other realms of human malfeasance, there have been equally infamous (though not as numerous) females, from Livia and Countess Bathory to Anne Bonney. However, I don't include Boadicea. She was provoked! :)