Let's face it, as soon as one billionaire-playboy superhero got in on the Fifty Shades of Grey craze, it was only a matter of time before that other one tried his armor-covered hand at it. After all, Tony Stark had cornered the market on "handsome, charming businessman with a dark side" before Christian Grey was even a thought in E.L. James' head.

This Fifty Shades/Iron Man mashup isn't as polished as "Fifty Shades of Wayne," but it certainly has its moments, particularly at the end.