South Park: Season 6, Episode 4

6 - 4: Fun with Veal

The boys take a field trip to a local cattle farm and learn where veal comes from. They are horrified at how the baby cows are treated, so they steal them and hide them in Stan's room. As the boys wage their protest, they are treated as terrorists and a negotiator is brought in. Soon, Stan refuses to eat any meat, and he develops a very mysterious illness.