The Pregnant Men website
collects together a wealth of information about pregnant men. As the site boasts, "If it pertains to men being pregnant, you can be sure to find it here."
It's very odd. Almost like a fetish site with people contributing stories and art about pregnant men. So I'm not sure if it counts as a hoax website because it doesn't claim that any man in particular has gotten pregnant. It just fantasizes about men in general being pregnant.