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A man went to his lawyer and told him, “My neighbor owes me $500 and he doesn't want to pay up

What should I do?”

“Do you have any proof?” asked the lawyer.

“Nope,” replied the man.

“Okay, then write him a letter asking him for the $1000 he owed you,” said the lawyer.

“But it's only $500,” replied the man.

“Precisely

That's what he will reply and we will have the proof we need to nail him.”