spook move

The act of covertly excusing yourself from a gathering, typically for a family celebration of some sort, where others try to use you as a free babysitter because "you don't have anything going on" or someone asks you to do something at work that's not in your job description.

Usual suspects are that one cousin who's a cheep skate and has notoriously bad behaving children, or the well meaning mother that talked another family member into "getting you used to kids" in hopes of having more grandchildren.

That one lazy co-worker who preys on the kindness of others to get their work done for them. You know who you are.