Definitions by G Rider 80

Dirt Back 

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.

Dirt Back by G Rider 80 April 6, 2010

DirtBack 

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.

DirtBack by G Rider 80 March 17, 2010