Ed T, I would suppose that the obvious conclusion to draw is that Big Mick is English, and is using the term prick in the English slang sense.

To call someone a prick is to call him a dick, plonker, willy, penis, etc. The sense implied is an awkward and indeed obstreperous person of the male gender. A similarly inclined female would likely be called a twat.
I don't know if that sense of the term is common elsewhere. It isn't in the link you supplied.