"If I ask you something that you don't know, you owe me $5. The same goes if you ask me something I don't know." The blonde refused.
"Okay. If you don't know an answer, you pay me $5, but if I don’t know an answer, I pay you $50." The blonde accepted.
The Lawyer went first. "What is the distance from the earth to the moon?"
The blonde didn't say anything, but merely reached into her purse, pulled out a $5 bill and handed it to the lawyer. Then it was her turn.
"What has four legs going up a hill, but only three coming down?"
The lawyer had no idea, so he gave her a $50 bill.
"So, what is it?"
The blonde said nothing, but merely reached into her purse and gave a $5 bill to the lawyer.