It's a nice sunny day, you're driving down the motorway in your Manta GTE, the roads are nice and clear and then..
Hey hold on! There are no cars in the slow lane, a couple of cars in the middle lane and everybody else is squeezed into the fast lane, trying to overtake the sow idiots in the middle lane!!
Doesn't that just piss you off?
Well, apart from installing flamethrowers, 50 cal machine guns or side-aiming grenade launchers there's not a lot you can do about it other than flip them the bird. Passing on the inside (undertaking or overtaking on the left) in the UK is not actually illegal as such but does tend to be frowned upon by the coppers and could lead to a charge of careless or dangerous driving!
But no, wait, what about Middle Lane Morons? This great site aims to highlight the hideous blight of middle lane morons, reminding people to Keep Left Unless Overtaking.
You can support the cause by spreading the word, keeping left yourself, linking to their site or even buying a sticker :) And for those in the UK you can sign the petition.
And if you're in one of those countries where it's OK to overtake on any side or you drive on the right anyway, then just ignore all this OK? ;)