Some asshole got laughed out awhile back when he claimed to be a reincarnated dragon from another planet, then there was the "Loosey Goosey" guy who thought he had a demon named Lucifer (not THE Lucifer, just A Lucifer) in his head, also banned, but it's only a matter of time until the weeaboos in LP trickle out and defend their tumblr blogs.
I'd bet money that plenty of goons already have imaginary friends but fear getting banned until enough hordes of freaks move onto the next socially stunted fad that makes headmates seem normal in comparison and we all forget about it.