Whatever
To them means "I've won the argument on the grounds that it's not worth my effort"

To me it's another way of saying "I've lost the argument".

Mrs Sandettie once said it, I laughed and pointed out that she's not actually a 12 year old. She's never said it since.
( sandettie light vessel automatic New Twitter - @bollocksreally, Thu 15 Apr 2010, 13:58, 3 replies)

You are wrong. Watch as I prove how:
Text conversation between A Vagabond & friend:

A Vagabond: We are about to sit down to a full roast dinner, followed by a sticky toffee pudding with custard, and a film in which Scarlett Johanssen and Penelope Cruz lez up together. This is, scientifically, the best way to end a Sunday.

Friend: Excellent. I trust they are lezzing up in the name of art, and that you will opine such?

A Vagabond: Whatever.
( Je suis un vagabond is an unfunny, up your own arse middle class knob, Thu 15 Apr 2010, 14:06, closed)

Ha!
I see what you did^*

* another annoyingismⁱ

i) Made up word.
( sandettie light vessel automatic New Twitter - @bollocksreally, Thu 15 Apr 2010, 14:40, closed)

Or, in English...
...another annoyance.

*sigh*
( shinyshinyscalp less a man, more a way of life, Thu 15 Apr 2010, 14:42, closed)