500 Internal Server Error
Because they ordered pepperoni pizza and all they got was plane.
A large twist cone.
When this reaches 500 upvotes I'll tell you.
About 500 calories.
Waiter: Well you know how slow turtles are.
Waiter: The cheesebur- Me: WRONG! *points to the picture I drew on it of Ironman fighting Darth Vader*
You have to deal with people who forget to close their tabs.