This one might be old but still gets a laugh.....

What does a Kiss taste like?
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>The day a teacher had a taste test with her students.
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>She picked a little boy to do the first test.
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>She blindfolded him, put a Hershey kiss in his mouth and asked,
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>"Do you know what it is?"
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>"No, I don't," said the little boy.
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>"Okay, I'll give you a clue. It's the thing your daddy wants from
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>your Mom before he goes to work."
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>Suddenly, a little girl at the back of the room yelled,
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>"Spit it out! It's a piece of ***!"