We all know Russell Crowe likes to bust out the odd song or two of a chat show, and this time round it was The Jimmy Fallon Show in New York that got to hear a number from the actor.
He was definitely more prepared than he was for his stint on The Late Late Show too, as himself and Jimmy Fallon took to the stage to sing a song called "Balls in Your Mouth".
It's actually about tar balls and the five-year anniversary of the BP Oil Spill, but why let details get in the way of a bit of good old fashioned immaturity, ey?