Video: Why do men have nipples?

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Why do fools fall in love?  Where’s Dick Cheney’s undisclosed location?  And why do men have nipples?

These questions often turn up at dinner parties or next to the water cooler at work.  But no one seems to ever ask people who can answer them.

Countdown comes to the rescue to save you from potential embarrassment.  Dr. Billy Goldberg, co-author of Why Do Men Have Nipples?: Hundreds of Questions You Only Ask Your Doctor After Your Third Martini , is in the house to answer the burning queries.

Q: Why do men have nipples?

A: “It's all nipples these day.  Basically, in utero, we develop — both men and woman develop the same.  Then at about six weeks, the men take the non-nipple route, and we're left behind with this vestige of our days as women, our nipples."

Q: Do underpants men wear affect fertility?

A: “Technically, tight underwear could make you a little warmer downstairs, but it doesn‘t have any effect.  There was a great “Seinfeld” thing, where Kramer liked his tightie-whities, and they told him he couldn‘t.  But that is not true.”

Q: Is lip balm addictive?

A: “Although, a lot of people think that.  Lip balm is not addictive.  People have attacked a lot of lip balm companies over the Internet.  There are all these conspiracy theories.  But there's no proof that it's addictive at all.  My wife puts it on all the time.  But it’s habituating, but not addictive.”

Q: Is it bad to crack your knuckles?

A: “Set me up to be the medical dork.  Basically, there's just some air in the joint fluid, and that pops.  It doesn‘t cause arthritis.  It can stretch the ligaments a little and decrease your grip strength, so if you need to grip something...”

Beer before liquor, never the sicker; liquor before beer, you’re in the clear?

A: "The truth is, there‘s no truth to that." 

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