Pizza

"I'd like to order a pizza please."
"Certainly. Which kind would you like?"
"One with no meat. I'm a vegetarian."
"We don't have any pizzas that don't have meat on them."
"What do you mean? Just make one without meat."
"Without meat? Not possible."
"Just put some tomato sauce on the base. Some onions, mushrooms, peppers and a bit of cheese. Easy."
"It would still have meat in it though."
"No it wouldn't."
"Yes it would."
"Are you some kind of idiot?"
"No, are you?"
"The pizza I just described has no meat on it, so clearly you are an idiot."
"Our bases are made from minced penguin, so they all contain meat."
"What does penguin taste like?"
"A bit like chicken."
"Interesting."