Well, this rivalry has taken an unexpected turn. Saturday's matchup will involve more than just the score on the football field. This time, bragging rights will also be up for grabs as researchers see which university can collect the most urine during game day.

Yes, you read that correctly.

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Tailgaters Asked to Donate Urine for Saturday's Science Project

According to a press release, this unusual competition (nicknamed 'The Piss-Off') serves a scientific purpose. Researchers plan to turn the collected urine into nutrient-rich fertilizer, which will be used in agricultural research projects at both universities.

But don't worry! The fertilizer will be used on horticultural crops, such as grass and ornamental plants, rather than crops grown for human consumption.

Here's How Saturday's 'Peecycling' Event Will Work:

Two yurts will be set up on the grounds of the nearby Ann Arbor Golf Club, one representing the University of Michigan and the other Michigan State. Fans can choose which yurt to visit based on their school allegiance. Urine collections will run from noon until 8:00 p.m. on Saturday, November 7. May the best team win!

Unfortunately, at this time samples are only being collected from, "people who stand up to pee". Ladies, that's not us.

The collected donations will eventually be used in agricultural research projects at both universities, including MSU's Kellogg Biological Station and U-M's Matthaei Botanical Gardens. Wait, could this be the secret behind U-M's famous PEE-ony garden?

15 Most Important Games In The Michigan vs Michigan State Rivalry

Michigan and Michigan State have been battling it out on the gridiron since 1898. You can imagine that playing each other for that long will lead to a pretty heated rivalry. The Michigan / Michigan State rivalry is one of the best in all of sports. There have been many moments that helped to build that rivalry over the years. Check out 15 of the most important games over the decades of the Backyard Brawl.

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