This is the Mario riding Yoshi balloon costume posted by Redditor Psypher108. Is that him wearing it? No clue. Is it one of his friends? Not sure. Did he just find the picture on the internet? More than likely. And speaking of finding pictures on the internet -- have you ever been clicking around an adult site and stumbled across shots of an old crush? Dammit, me neither.
Thanks to ChaosLex, who loves chaos so much he would run up and headbutt this guy in the chest wearing a Hellraiser mask.