A Prius owner a**hole who is slowing down traffic on the highway because he's busy trying to see how high he can get his gas mileage while he stares at his gauges.

Closely related to "Left Lane Richard" aka.. Left Lane Dick
You're a priass and a true road hazard on the highway.

Gonna run that priass off the road
by gothedistance August 26, 2009
alt. spelling Priarse (British/Australian English).

A model of hybrid motor vehicle manufactured by the once respectable Toyota Motor Corporation.

This model is widely known for a number of special features:
It has two engines, one gasoline, one electric, to aide it in going forward.
It also has brake and accelerator faults, that prevents the user from slowing down at all.
Wow, what kind of car is that?

It's a Priass, don't you recognise it - it has smashed into the back of those cars/buildings/ornamental pylons etc.
by JTTSG March 12, 2010

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