Technically, I don't know for a fact on anyone, unless I've seen their hang-down or the abscence of it.
That would be the best put on in internet history to find out that you are actually MM's alter ego. (or that MM is your alter ego.)
This is a funny subject. About 10 years ago I was into online MMO geekfests and once made a female character because I was bored and it was something to do. After a month or so of playing that character I had to delete her as the amount of unwanted attention I got was ridiculous. People gave me shit all the time and "helped" me out, I got weird personal messages and requests to be peoples girlfriends. Even when I told them I was a guy and to shut the fuck up some of them just got weirder. Thats when I realized that life for hot chicks is both infinitely easier and infinitely harder than life for everyone else. On your poker note. I read once that one good strategy to win money online is to make a female character name or avatar.
Mook's avatar always makes me think of a character from a Dickens novel. Not any character in particular but just a general image of a 19th century villain. BTW, I am also not a cake. Nor have I ever jumped out of one.