"Why?" asks the confused waiter, as the panda makes towards the exit. The panda produces a badly punctuated wildlife manual and tosses it over his shoulder.
"I'm a panda," he says, at the door. "Look it up."
The waiter turns to the relevant entry and, sure enough, finds an explanation.
Panda. Large black-and-white, bear-like mammal, native to China. Eats, shoots and leaves."