Jumo

Jumo(주모)(feminine) is an archaic Korean word refers to the barkeeper of jumak where they provide food, drinks, and accommodations for travelers.
It is depicted commonly in the Korean historical drama as the languorous travelers sitting on the wooden floor of jumak, yelling "jumo! fetch me some makgeolli(Korean rice wine)!"

Nowadays people on the internet call jumo for the situations that inspire their national pride(e.g. when Korean singers/sports figures perform well in the overseas) in a chauvinistic and yet hilarious way.

Heung-Min Son just scored his 21st league goal. Jumo, drop the beat!