mail it in
v. phr.— «Actors often go through the motions, mouthing the dialogue in a natural way and simply following the blocking.…This kind of acting is often referred to as “mailing it in” or “walking through it.”» —by Delia Salvi Friendly Enemies Jan. 1, 2003. (source: Double-Tongued Dictionary)
Further reading
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...
Cat hair may be something you brush off, but cat hair is also a slang term that means “money.” In the same way, cat beer isn’t alcoholic — some people use cat beer as a joking term for “milk.” And imagine walking on a...