The name giving at birth to ensure that the child will spend a lifetime explaining that's its jazs not jazz, and no it's not short for anything.
Person 1: hey man my names jordan,whats yours?
Person 2: oh my name is jazs.
Person 1: jazz?
Person 2: now it's jazs.
Person 1:is it short for anything?
Person 2: no, now please go away.