Jeffrey Dubow, of the Brooke and Jeffrey radio show on the IHeartRadio network, performed a parody of Taylor Swift's song "I Knew You Were Trouble." The lyrics are a bunch of Hogwarts, so to speak. The song tells a story about Harry Potter falling for a muggle (a mere non-wizard), which is apparently scandalous in the Harry Potter universe. Each verse shoehorns in dozens of Harry Potter references, but even if you're not a fan, you'll get a few giggles out of it. The lyrics are posted at the YouTube page.
If you are wondering why Dubow is in costume during a radio show, I imagine it was because of the video camera. -via reddit