JMN is a term coined by speculative modeling extraordinaire "The Wooksta!" It is an acronym for Joyless Modeling Nazi.
A JMN is (almost always)a grown adult who dares take plastic models seriously; having forgotten what was fun about it to begin with. They have all the resources and knowledge in the world to become respectable hobbyists, but have the creativity of a free-range garden slug.
JMN behavior can be broadly described as anal retentive
, and can stem from insecurity resulting from having a small penis.
Anyone who can sit through a seminar about Messerschmitt
] Bf 109s without falling asleep
A guy who buys more than one Airfix TSR.2 but will only build them in historically accurate paint schemes.
The snooty clerk at the hobby store who faints when you buy a rare OOP
Aurora model kit from the 1960s only to chop it up and turn it into a flying submarine robot.
Any jerk at a modeling club who says contests are for "Serious Modelers only"(meow)
The nerd who collects video stills from every possible angle of the USS Enterprise-D
in order find out where the septic tanks flush out and modify his AMT