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1.
A derogatory term for the child of a Cuban (wetback) and an Arab (sand nigger).
What is with all these mud niggers swimming to America only to bomb our buildings?
by MudNigger January 20, 2012
 
2.
A derogatory term for a lower class white person from the southeastern Untied States.

Adopted after careful analysis of the males' tendency to participate in mud based sporting as well as the redneck's love of dirty things. (Trailer parks, cheap whores, spray on tans, and Wal*mart Super Centers.)
That toothless mud nigger just called me a Satanist after I told him I was Catholic.

This mud nigger on TV just arranged a shotgun wedding with his sister.
by Burii December 02, 2011