The annoying person sitting next to or behind the driver of a vehicle that thinks they know more about how to drive and offers criticism and other driving tips.
by Thomas Wronski February 15, 2007

A back-seat driver, someone who regularly criticizes and/or nags the operator of a moving motor vehicle, many times a relative.
My mother-in-law is the classic nagivator.
by Jimmy ZZZ April 07, 2008

by Marioshka August 26, 2022
