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1.
Another way to say buddy, pal, homie etc.

Invented by Don Scadeech (aka. Scadeech or Scadeechy) from Philly.
Yo nucky, where we goin later?

What's up nucky-boy?

Who's that dude?....Oh him...that's my nucky.
by Don Scadeech November 17, 2011
 
2.
Something That is nasty and Yucky....used by band geeks and Jessica to Annoy People
Boy-Hey look at that poop
Girl-Ewwww thats nucky!
by Chance.... August 05, 2005