the.com/duties
The things you'd never do for fun, done because someone has to.
means Obligations or tasks you're morally, legally, or professionally required to perform, fun optional.
from From Old French deu, what is owed or due — duty is literally what's on your tab to the world, payable in effort.
Tax twinCustoms duties are owed money, not owed actions.
DerelictionFailing your duty has its own legal crime.
Off-dutyThe sweetest two words a soldier knows.