Russell Crowe and Jimmy Fallon sing a lame song The lyric that they sing over and over again is this:“You’ll get balls in your mouth. Don’t swim in the ocean. You’ll get balls in your mouth.”I think Fallon can be really funny, but this song wasn’t good. And Russell Crowe, who looked a little overweight, didn’t add anything. For much better Fallon songs check out the Tebowie video below.