As one Tumblr user points out, it's kind of weird how damn responsible the Hogwarts students are throughout the Harry Potter series. They're teenagers, after all! You know, aside from all of the weird shenanigans Harry, Ron and Hermione get into that ultimately play into stopping Voldemort, there seems to be a lack of regular dumb teenager sh*t just for the hell of it, and that's where Tumblr's idea for a "Wizard Jackass" comes into play.
Instead of tweeting about the sexual orientations of various characters, maybe you should take note on this, J.K. Rowling!