Pig beef?

Beef was originally thought up by pigs, but cows liked the idea so much they thought they’d steal it. Unfortunately, due to an anonymous donation, the cow’s marketing ploy was much better than the pig’s, and so cow beef became popular. The cows then took out a patent on beef and pigs were forced to live off their poor earnings from pork. Strangely, both pigs and cows evolved from aubergines.