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1 definition by Fantasytech

 
1.
U.S. Marine Corps slang for unlucky cocksucker.
Playing off of the 4 digit military occupational specialty (MOS) codes used. 13 being unlucky and 69 representing oral sex. Signifying an unusually distastefull assignment.
Iv'e been redesignated a 1369, stuck on mess duty for a month.
by Fantasytech March 03, 2010