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.

by G Rider 80 March 17, 2010

dirtback

The after effects of debris (mud / dirt) on riding gear (primarily on their backs) after a long day of dirtbike riding.

I saw 4 dirtbacks climbing a very steep hill on their dirtbikes.

by Mike Hoss March 30, 2010

dirtback

Low-class, trailer trash fuckhead.

Goddam dirtback, your mangy pit bull shat on my lawn again!

by Octopod November 8, 2003

dirtback day

Three days out of the week put aside for extreme dirtbaggy problems. Days are usually Monday, Tuesday and Thursday. Continue until a significance in dirtbaggy problems is achieved.

Happy Dirtback Day! Every Mon, Tues and Thurs.

by Dirtbackinator August 15, 2015

dirtback riding

Referring to the dirty back participants revive while having intercourse in a forest or field.

Dude, I can't wait to go dirtback riding with my girlfriend tonight

by Zabe sexler October 6, 2015