Hey! So I saw this in the interest checks and I'm going to bite! 

My idea was going to be for an extroverted flirt that has a habit for [i]phasing through things[/i], but... only when he's embarrassed. While he typically doesn't get embarrassed easily, if he gets too embarrassed he can accidentally phase through stuff like chairs, floors, or even his own clothes (In a way we'll obviously do the whole conveniently-standing-behind-furniture schtick). Probably a troubled foster kid or a street kid caught in illicit acts.