Smurf me? No, smurf you!

Obnoxious guy to morning commuters while trapped on a Orange line train: Anybody want to start a sing-a-long? I'm sure there's a song everyone knows. "Camptown Races?" "Oh Susanna?" The theme to the Smurfs?
Commuter: How about the national anthem?
Obnoxious guy: Please. No one knows that one. (Proceeds to sing the smurf theme)

--somewhere around Rosslyn