Satan's summary of 3 lane+ roads (motorways mostly): people that sit in middle or 'fast' lanes when 'slow' lane is empty are ######*. When lots of them do it they're a herd of ######*. However, on the m25 only it's a stampede of ######*.
The M6 Toll has a special breed of ########, like a lone albatross soaring over the Southern Ocean they live in oblivious isolation with nothing for miles around.