By LINDSAY CHRISTIANS lchristians@madison.com, Capital Times (Madison, Wisconsin)
Leigh Rubin thought his joke about using cow udders as squirt guns was pretty original.
But when the California-based cartoonist shared “Squirt gun fights at the dairyfarm” at the World Dairy Expo a few years ago, he was surprised to find that farmers had come up with this concept long before he did.
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