Adds Up

A mental hospital psychiatrist is examining three of the inmates.

He asks the first, "How much is two plus two?"

The man replies, "416."

He asks the second, "How much is two plus two?"

"Saturday," the patient replies.

The psychiatrist turns to the third patient. "How much is two plus two?"

"Four," the man says.

"Very good," the analyst says happily. "How did you come up with that result?"

"Easy," says the patient. "You subtract Saturday from 416."

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