A driver who transforms from a regular person into a rude, dangerous roadhog when behind the wheel of a truck.

verb. the action of quickly and fluidly moving a motor vehicle from outside lane to exit or vice versa, usually without aid of a signal.

One who, while dressed in brightly coloured silly clothes and an inadequate helmet, rides a (racing) bicycle (often in heavy urban or rush-hour traffic) at high speed and without signls, as if they have no interest in their own safety or that of others, and genuinely wish to die as soon as possible in a multi-vehicle collision of their own making. They invariably look offended if forced to give way to cars, whatever the circumstances. See also kamikaze.

Driving in two lanes at once on a freeway

A driver who lacks the inclination to choose which side of the road to drive on. The assumption being that since they paid taxes to build said roads, they will use any and all of it as they see fit.

a giant turd is typically used to describe someone or something that is exposed in a very public place, taking up way too much of that public place, with absolutely no place to hide.

A term used for the driver who is stopped at a red light in the right hand lane, but is not taking the unprotected right turn. In turn, the driver prevents other people from taking the right turn. Since this person is stopping the "shit" from flowing, he is a buttplug.