Coincidentally, I was dicked about by an Audi driver this morning on the way to work.
We were on dual carriageway entering a roundabout, side by side when (and this is the strange thing) we were going straight on and were half way round the roundabout, when, with no indicating or warning, he cut straight across the front of my car causing me to brake hard. He then returned to the inside lane and came up behind some slower cars. He slowed down to their speed, until I was nearly alongside him again, when he quickly pulled out in front of me again without indicating and causing me to brake.
Finally pulled alongside him as I was turning right at the next roundabout and it was a middle aged bloke and he was just looking at me and laughing smarmily. I just gave him the international sign of appreciation and drove off.
I did NOTHING to antagonise the situation apart from sound my horn when he nearly hit me.
What a plonker.