A man sitting in the bar found that the front of his trousers was all wet.
Turning to the man on his right he asked, "Did you pour beer on my trousers?"
"Nope," came the reply.
Then, turning to the man on his left, he asked, "Did you pour beer on my trousers?"
The man also replied, "Nope."
"Then it must be an inside job," he murmured.
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