Jimmy Fallon and Eddie Vedder Duet on ‘Balls in Your Mouth’ [VIDEO]

Tar balls, which are thought to be the remnants of last year’s BP oil spill, have begun appearing on Gulf Coast beaches due to recent hurricane and tropical storm activity in the Atlantic.

Inspired by this recent turn of events, Jimmy Fallon reprised his tar ball protest song ‘Balls in Your Mouth’ on ‘Late Night.’ But, this time, he was joined by guest Eddie Vedder of Pearl Jam.

When Vedder appeared unannounced, the crowd cheered in excitement, his mere presence underpinning the seriousness of the song. Or maybe not.

Watch:

[Late Night With Jimmy Fallon]