Download MP3 (Right-click or option-click the link.)
A guy says to his friend, "Guess how many coins I have in my pocket."
The friend says, "If I guess right, will you give me one of them?"
The first guy says, "If you guess right, I'll give you both of them."
This joke came from Jokes for the ESL/EFL Classroom on The Internet TESL Journal's website (iteslj.org).
If you have some free time, try Spelling Quiz #3