Norbert Lightowler's just reminded me of one:
Then-girlfriend's 10-year-old daughter: "Kenny, why do men like boobs?"
Me: "Err... hmm, umm..."

I really couldn't think what to say, whereupon she got really grumpy and exclaimed "You DO know, you're just not telling me!"
(Professor Kenny Martin Hmm? What?, Sun 9 May 2010, 18:22, 3 replies)

Quote
Comedian Simon Munnery says "men like breasts because there are two of them, and that represents good value."
(Nitrous Nitrous, Sun 9 May 2010, 19:28, closed)

Ha ha
*clicks
( social hand grenade I was a lurker before you were a lurker, Sun 9 May 2010, 21:07, closed)

It's evolution, baby

(itsOnlyGoingToGetHairier, Wed 12 May 2010, 14:51, closed)