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A person who belong's to a sub-culture of Hillbilly's that are predominately inbred and live in single and double wide mobile homes.The term originated in Lubbock Texas where there is a lack of moutainous terrain and the hillbilly's have inhabited trailer park compound's.
Deputy's had to arrest the Trailerbilly on charges of aggravated bestiality.
by bayouhunter January 21, 2006
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redneck's that live in trailer parks
The people that live across the street in the government subsidized apartment buildings are trailer billy's. Bare footed tube top/wife beater wearing trash. Multiple kids with numerous father's.

by DAH Posse May 23, 2008
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