n. Trucker-speak for coasting down a hill or more often a mountain with the transmission disengaged. 18-wheelers can only go so fast, and the engines slow them down when coasting, so to go faster they take the engine out of gear. Runaway truck ramps were built for people who do this.
Trucker: My load is late. I'll have to switch on my georgia overdrive and get in the hammer lane while I go down this mountain. I might fly off a cliff, but if I don't maybe my load will be a little bit less late.
by fizzle April 05, 2004