Sarcasm.

This is something everybody can do it...
but not everyone can do it beautifully...
For instance me, I can never be good with this because I am too kind and most of the time too soft hearted to be sarcastic.

To perform it with grace, you need to be ruthless.
A fair bit of humour is required to ease the tension of being rude.
You also need a certain amount of reference and wits to give your sarcasm content. Finally, you just need a silly statement from your victim to trigger your talent.

CQ is an expert with this. He flaunt his sarcasm like composing poems...and overwhelm you with awe...especially when his sarcasm reaches a point of mattter of fact... Until I was almost always..taken in.
However, to reach this kind of standard of being sarcastic is not easy.
I realise he himself suffer from occasional confusion in expressing himself in order to perform sarcasm to perfection.

Finally, some words of advice...
Do not attempt sarcasm if you cannot handle conseqences...
A bit of sarcasm can be entertaining but too much can be annoying...
For guys, wrong kind of sarcasm makes you look ugly,
and wrong kind of sarcasm from gals makes you look bitchy.
So BEware!