Once in awhile, speaking Italian comes in handy. Here's my contribution to the nickname brigade, through a literal Italian reading of Nocioni's name.
In Italian noce = nut (or walnut). The suffix -one makes the noun that it's attached to "big." Like a bacio is a kiss, and a bacione is a big kiss. So a nocione is thus a "big nut." And to pluralize, Italian does not append -s to the end of the noun. If the noun ends in an -e, then that -e becomes an -i to indicate the plural. Thus you have one nocione and two nocioni. There we have it, nocioni means "big nuts."
Andres "Big Nuts" Nocioni. Now he just has to drain a couple game winners to justify the nickname.