Top Definition
jmz
jmz: A really kind helpful guy, usually noticed for his massive penis.
Person A: Have you seen that jmz?
Person B: Yeah, it's huge!
by bigswagfag November 02, 2013
1 more definition
jmz
Complete and utter twat
Person A: Do you know jmz?
Person B: Yeah, he's a twat.
by nixfanboy March 29, 2010

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