Lane Slut 

Someone who switches lanes continually to try and make better time, especially in heavy traffic.

Passenger: "Stop switching lanes!"

Driver: "Yeah but that ones way faster"

Passenger: "Oh god your such a Lane Slut!"

Lane Slut by TheNickofTime January 27, 2010

lane slut 

A driver who yields to everyone and let's them change into his/her lane.

The car in front of me was being a lane slut letting everyone on the "right turn only" lane change into his lane to go straight.

lane slut by namnomnom October 17, 2009