Joke stolen from: JuSt JoKiN' byTAC

Two older women who were rivals in a social circle met at a party.

"My dear," said the first woman "Are those real pearls?"

"They are," replied the second woman.

"Of course the only way I could tell would be for me to bite them," smiled the first woman.

The second responded "Yes, but for that you would need real teeth."