It is that time of year again. Time to cut the sleeves off of your shirt, develop a un-quenchable thirst and eat bull testicles. One of the biggest parties in America happens each year, right here in western Montana. Every year the party keeps getting bigger and bigger. Each year the famed "Undie 500" takes place, where "grown ass" adults hop on tricycles and race, while wearing nothing but their tighty whities. In an effort to give you the chance to witness this spectacle with your own eyes, we are giving you the chance to win passes to this year's event. All you need is to snag a pair of grandma's drawers and snap a photo.

To enter, all you need is to snap a photo of you wearing or posing with someone wearing large underwear. BE CREATIVE! All submission will be put to a vote and the winner will score a kick ass prize package, which includes passes to the Testicle Festival and tickets to Theory of a Deadman.

Deadline to enter is 7/25 at noon.

Official Rules

1. All approved entries will be posted at during and after voting. Voting will be open from July 25 to July 29, with the winner announced online and on air on July 30.

2. You must be at least 21 years old to participate.

3. Submitting a photo grants KBAZ/Townsquare Media permission to post your image at and on Facebook.

4. Employees of Townsquare Media, other radio stations in the Missoula market, and of participating sponsors, are not eligible to win.

5. All rules stated in the KBAZ General Contest Rules are in effect.

6. All decisions of KBAZ/Townsquare Media regarding the Granny Panty 500 contest are final.

7. Odds of winning vary greatly depending on number of participants.

8. KBAZ/Townsquare Media may amend these rules or discontinue the contest at any time as announced on-air and online.