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1.
A varied assortment of things, typically in a chaotic or seemingly erratic format. Just a whole big mess of things.
Yeah, it was a whole hubjub of drunk people, druggies, strippers and hipsters.
by Dahubjuber November 25, 2010
 
2.
Anyone educationally sub-normal. A spastic.
" She's got three kids. Two of them go to my school but the eldest is a hubjub"
by Terry Burgess March 27, 2008