In 1963, a group named the Kingsmen covered the song “Louie Louie,” originally recorded by Richard Berry eight years prior. The Kingsmen’s version is a classic and you’ve almost certainly heard it (but if not, here you go) and likely can sing the whole thing — kind of. You probably have no idea what the actual words are because they’re a garbled mess which is impossible to understand. But that didn’t stop an angry parent from writing to then-U.S. Attorney General Robert F. Kennedy and insisting that the lyrics were obscene. For some reason, this led to an FBI investigation (!) which concluded, no, the lyrics are just unintelligible. The FBI was right, but they missed something. At about 0:53 into the song, Lynn Easton, the band’s drummer, dropped a drumstick and yelled out the f-word. It’s audible (but not obvious) in the recording.