Usually refering to a person of low intelligence, having the appearence and attitude that would most likely land them a job flipping burgers at Mcdonalds.
A small and tasty snack containing 100% white meat as well as the hair, nails, and bones of the animal used. (not always chicken)
Kid 1: hey, do you want to go eat something really gross?
Kid 2: like the stuff i found in that drainage ditch?
Kid 1: EVEN WORSE, we can go eat somechicken mcnuggets.
The significance of the 'Mc' in the word 'McNugget' was inscribed on a stone slab. The stone slab is believed to be hanging on the wall in some yellow-belly's house.