I've never seen or read any of the Harry Potters because I'm against the portrayal of fake wizardry, but a friend told me this was "absolutely f***in' hysterical", so here it is. I actually bothered doing the research (which is rare) to understand the joke and now I just feel embarrassed for my friend. Or should I say "ex-friend." Haha -- check your Facebook, Kyle!
Harry Potter Math [buzzfeed]
Thanks to Kyle, who probably won't be making the cut for my cookout this weekend.