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8.
An individual who is not capable of respectfully participating in any common aspect of society including/but not limited to: hygiene, intelligence, fitness, appearance, style, speech, sexual relations, means of transportation, housing, and familial obligations. They get their clothes from school lost and founds and go to costco to eat the free samples for dinner. In the eyes of society this person is about as useful as a bag of dirt, they can be used to fill up holes in the ground and thats about it. Nobody wants a dirtbag in their house because they will soil all the carpet and then try to eat the shit out of the catbox.
Dude, get this dirtbag out of my house! He is making the air contaminated.

Dylan: Hey man, can Joey come to the party?
Cameron: No way dude, that kid is a dirtbag. He always shows up smellin' like low tide at the bay, and always tries to steal my clothes and eat my cats shit!!
by c.harris June 02, 2011
 
1.
A person who is committed to a given (usually extreme) lifestyle to the point of abandoning employment and other societal norms in order to pursue said lifestyle. Dirtbags can be distinguished from hippies by the fact that dirtbags have a specific reason for their living communaly and generally non-hygenically; dirtbags are seeking to spend all of their moments pursuing their lifestyle
The best examles of dirtbags and dirtbagging are the communities of climbers that can be found in any of the major climbing areas of North America--Squamish, BC; Yosemite, CA; Joshua Tree, CA; etc.
by Shay (dirtbag wannabe) August 17, 2007
 
2.
One who continually disregards others and humanity in general. One prone to create disturbances, break laws, injure others, display corrupt moral behavior (sexual deviant). One too disguisting to detail. Just plain f*#%ed up.
"You are under arrest you dirt bag!"

"Put that thing down and pull up your pants - you f&%#ing dirt bag."
by JB Summers October 19, 2004
 
3.
a white trash, wife beating, beer guzzling bastard. Often associated with cut-off shorts and mullets and incest
you can take a dirtbag out of the country but you can't take the country out of a dirtbag!
by Audra April 09, 2003
 
4.
A slang used in the United States Army to describe a soldier whose performance is lacking. Dirtbag is typically used to describe a soldier with long term performance issues, whereas similar US Army slang, such as "Ate up" and "Soup sandwich" are used in the short term. All soldiers have at one time or another been designated as "Ate up" or "Soup Sandwich," but only those with significant long term problems are labelled as being dirtbags.
"Soldier, you were once just ate up, but now you're becoming a real dirt bag. Are you proud?"
by GaliemVae... oh, fuck it December 06, 2004
 
5.
n: Piss-poor, unemployed rock climber who lives off scrounged food and sleeps, obviously, in the dirt. The pinnacle of climbing committment and idol of employed climbers.

v: to 'dirtbag it': the act of living as a dirtbag
n: Climber A: "That ass hole said he climbed 200 days last year - is he full of shit?"
Climber B: "Nah man, he's a dirt bag, fo sho."
A: "Fuck."
B: "Yeah dude, some day..."

v: Climber A: "Sorry to hear you got laid off. You bummed?"

Climber B: "Nah, I'm just gonna dirtbag it in The Valley {Yosemite} all summer and regroup next fall."
by Daybagger May 07, 2009
 
6.
1:A dirty person. Someone who doesn't clean often, or lacks a certain hygiene level.Usually assocated with white trash, or trailer park trash.
2:Used as a insult to intimidate someone
Greg Marvin is such a dirtbag.
by John Lennon December 09, 2003
 
7.
A low-life, salty, and un cleansed individual/s living in disgust and demise and in harmony with a sea hag.
That dirt bag had the nerve to try and smell my wife.
by Koola User September 04, 2003