'duty man' In some fire brigades in the UK a watch member will be designated the role of general dogsbody.
The 'duty man' (dutyperson) shall carry out all menial tasks around the fire station eg, answering telephones, greeting visitors, emptying dustbins etc. The duty man usually recieves much harrassment from the remaining watch members, but each member gets to take his turn as 'duty man' and shall recieve similar treatment from the watch. A common used phrase... "hey dutyman, change the roller towel bitch!".
A person employed by a shopping complex who (according to management) only walk around the centre doing nothing else but talking to retailers, walking around in pairs and moaning about the higher management because they want their staff to become uniform and robotic. They are often unkempt with manly beards and/or eccentric hair styles.
There goes that duty assistant talking to the ice cream stand staff again, he/she has been for 20 seconds and that's far too long. Why are we employing these people?
Sara: hey poopoo. Poopoo: what up sara. Sara: yooooo you look good tonight.... Down for some duty dungeon action... Poopoo: fucking right but this time it's my turn.