Now back to our regularly scheduled sillyness...

And today's Brain Bender. Ready??

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Find the four digit number in which the first two digits are the product of the third and fourth, and the fourth digit is six less than the third. The sum of all digits is 21.

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Okay, you know how to play. The answer will be found later in the comments.

Meanwhile I am off to the hairdressers for another round... Wish me luck!

Update: CalTechGirl from Not Exactly Rocket Science is today's official Smartypants! Whoohoo!

(And I lost another inch and got highlights, in case you were wondering. The blonde is baaaaaack!)