Quote from Dick in Proud Dick
Dick: Welcome to Rusty's. How may I serve you? Man: How do you make your burgers? Dick: Excellent question. First a clamp comes down onto the cow's head, forcing it onto a conveyor belt, where a prod is inserted into the cow's rectum, electrocuting it. Man: Give me two. Dick: Thank you. And remember, at Rusty's, E. coli is not on the menu.