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1.
To take a four wheel drive truck/SUV and go off paved road, any place that a two wheel dirve truck could not make it counts as 4 wheelin
Me and Pete went 4 wheelin at the floodway yesterday
by Astapes April 24, 2007
 
2.
Being in an upright position but so tired that you fall in and out of sleep, causing your head to bob back and forth making you look like you are on an off-road vechicle of some sorts.
Man, we camped out for the Xbox 360 for so long, I started 4 Wheelin.
by LeeWoo January 24, 2009