Are you also obsessed with Meghan Trainor's catchy hit, "All About That Bass" [1]? Well Jimmy Fallon [2] just gave it the classroom instruments treatment, so if you didn't know about the track before — which is unlikely, as it's sitting at No. 2 on Billboard's Hot 100 — you're about to love it. Honestly, the video is worth watching just to see Fallon singing about bringing booty back. Take a look!