Speech Impediment

Two life-long friends were enjoying a few pints down at the local bar, when one said to the other:

"If I ask you a question, will you promise to answer me honestly?"

"Yeah, sure thing," replied his friend, "fire away."

"Well," said the first guy, "why do you think all the guys around here find my wife so attractive?"

"It's probably because of her speech impediment," replied the second guy.

"What do you mean her speech impediment?" inquired the first fellow.

"My wife doesn't have a speech impediment!"

"Well," replied his friend, "you must be the only guy who hasn't noticed that she can't say 'NO'!"