The so popular and classy "Cheers'C*nt!", started in the Sydney suburbs not by locals but international students.
Following that the classic GC = Gay C*nt or DC = Dopey C*nt appeared
Widely used by waiters and bartenders in order to stay classy in front of customers while paying the utmost
respect to colleagues (
like little code names if you may).
Also sounds
like the "si, si" used by Frenchies, Italiens or Spanians in their respective languages.