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1 definition by fazza11

 
1.
Someone that is not right in the head, Very dopey or even someone that has been on drugs that have fucked up there mind.
Example of a mong:
ME: You know I saw your dog fucking your mother today.
MONG: OMFGz0r where I will kill that fucker
ME: Wow your a mong!
MONG: What?
ME: Exactly
by fazza11 March 30, 2010