2 definitions by G Rider 80

Someone that gets dirt on their back from riding too fast on a motorbike.
Erik had a dirtback from riding too fast on the trail.
by G Rider 80 March 17, 2010
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A person that brings dirt back on their shirt. Most likely caused by a long day riding bikes in the woods.
Did you see Joe's shirt, he tore it up in the woods today. He is such a Dirt Back.
by G Rider 80 April 6, 2010
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