Really. That's all you have to do. Tweet us @moose951 with you best knock-knock joke by Friday morning (6/12) and you'll be entered to win a pair of tickets to the John Butler Trio in Billings.

Sure, we've got all sorts of ways for you to win your John Butler Trio tickets but this is probably the easiest. Heck, you can even Tweet us more than one knock-knock joke @moose951.

We'll pick a winner on Friday so good luck!