It's a rhetorical device
the most famous example being used by Cicero (In Verrem). Still, nice superfluous comma in your first sentence, I'll let you off.
( wotofco pissing in your swimming pool, Mon 20 Sep 2010, 14:13, 2 replies)

This poster gets additional pwnage points for utilising Cicero

( Light In Chains maker of the ikea sofa, Mon 20 Sep 2010, 14:24, closed)

I've been busy comparing Cicero's inquisitorial technique with that of Columbo off the telly
I should really go back to work.
( wotofco pissing in your swimming pool, Mon 20 Sep 2010, 14:28, closed)

Utilising Cicero is never worthy of points.
He's an unholy cunt.
( Lampito rise with the moon, go to bed with the sun, Mon 20 Sep 2010, 14:36, closed)

Well Verres may very well agree with you
However his lolatics had style
( Light In Chains maker of the ikea sofa, Mon 20 Sep 2010, 14:42, closed)

Classics-based slayings: best of all the slayings. Fabulous work.

( Monty Boyce, My cheese game is strong, Mon 20 Sep 2010, 15:34, closed)