OK ...
What's a "mong"?
Context tells me I don't want to be one, and I don't want to be anywhere near one ...
Urban dictionary to save the day.
(n.) Short for mongers.
Describing people who bring something,usually a bad feeling or comment to a setting or arena.
Context tells me I don’t want to be one, and I don’t want to be anywhere near one
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Indeed!
Mong = short for mongoloid.. the old term for someone with Downs Syndrome. A bit like moron but more politically incorrect and therefore more fun use, which probably explains why its still the insult of choice in many parts of HM’s Armed Forces.