Mystery Tipping

A man takes his seat in the theater, but he is too far from the
screen.

He whispers to the usher, "This is a mystery, and I have to watch a
mystery close up. Get me a better seat, and I'll give you a big tip."

The usher moves him into the front row, and the man rewards him
with a measly quarter.

The usher looks at his tip for a second and then leans over to
whisper to the man, "the wife did it."