Daewonbyung
When your brain is fried from studying and your stomach is mad at you for drinking too much coffee. It's like being a zombie with a hangover.
'I have Daewonbyung. I can't even think straight. My coffee is my only friend.'
'Daewonbyung hit me hard. I cried in math class and threw up in the hallway.'
'I got Daewonbyung because I studied for 10 hours straight. Now I'm a mess.'