it's an abreviation of the name Jugurtha, which means in tamazight (the language of people living in north Africa) the biggest, or the greatest, or the older one, or the wisier one...etc
A: hi, do you know where's JUG
B: i dunno, look for him, in the garage
Jugurtha or Jugurthen (c. 160 â 104 BC) was a King of Numidia, born in Cirta (modern-day Constantine)
A. hi, i'm new here my name's jugurtha
B. ohh what a nice name, isn'it the amazigh king's name