A group of obese, ugly or otherwise undesirable men, who loathe women with a passion, because they cannot get laid. They cook-up kooky conspiracy theories on the newsgroup soc.men, and basically do everything in their power to utterly repel the opposite sex.
Masculists are damaged goods.
Whatever you do, stay away from smelly Tom; he's a homeless bum with a bad case of dick drips & oh yeah, he's one of those nutball Masculists.
I don't think Masculists really want to change diapers; they're faking.