'돌팅아' was the expression in there. it became huge popular lingo for everyone who watched that. same as '돌탱이' but it's a bit cuter way than 돌머리, 돌대가리(this one is the worst) :) hope it could be helpful. have a great weekend.

rockhead often used synonymously with the idiot. But someone else may use your favorite. :) ex) 내 마음을 몰라주는 넌 바보야

rock head==바위 머리 바위 머리를 한국말로 어떻게 말해요 한국말로=with Korean language 어떻게=how 말해요=say