Korean Slang
월요병
woryobyeong
What it means
Monday blues.
Where it comes from
월요일 (Monday) + 병 (sickness).
When you'd use it
Sunday night dread or a sleepy Monday morning.
Example
월요병 때문에 커피를 두 잔이나 마셨어.Monday blues had me drinking two coffees.
Careful
Fine even with coworkers.