Only to be used as a non-derogatory term towards someone meaning they're a fool, or embarass you in public.
"Omg Haylee, you're such a gronk"
Sometimes: A likeable idiot or Bogan (especially in Queensland)
2. Why would you "steal my car for the weekend," you gronk!
Person 2: Yeah hes from Cessnock, go easy on him mate.
Hey you Cesnnock Gronk, get a job ya dole bludger!
Not enough of a man to talk to a women.
Prone to sucking up and talking about themselves alot.
Possibly lacking in testosterone or testicles
Everyone else: "You Gronk!"