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The lane on a highway directly adjacent to an off ramp lane where Assholes try to cut in at the very last possible second to avoid a line up. This generates new traffic in the asshole lane and a subsequent chain reaction into neighboring lanes.

It is a major root of rush hour traffic on highways worldwide.
Passenger: "Dude get out of this lane quick"
Driver: "Why?"
Passenger: "Because it's the asshole lane!"
Driver: "Thanks you are so wise"
by Raul (comes out at night) December 16, 2009
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