Trinity Catholic School [map] is holding its 22nd annual Cow Plop fundraiser tomorrow (June 2) from 11am to 4pm — or after the third “plop,” whichever comes sooner.

Should the idea of a cow plop should be somewhat foreign, think of it as large-scale bovine bingo. You pick a spot on a grid of grass, and hope that the cow eventually feels the need to do a number two there.

Trinity is calling this family-friendly event “The Greatest Plop on Earth.” It takes place directly in front of the school on Montgomery Ave. and will include a street carnival, pony rides, games, face painting, music, and food. Plus, of course, two cows for plopping. (Pictured above: the stars of a previous Trinity cow plop.)

All proceeds will benefit the school, although participants have the chance to walk away with up to $3,100 in first-place prize money. There will be 50 other cash prizes.

Tickets and T-shirts are available by calling the school on (509) 327-9369 or by e-mailing trinity [at] dioceseofspokane [dot] org.