informal something that you say when you believe something will end or someone will have to stop doing something.
If audience figures don't improve, it's curtains for DJ Mike Hamilton.
(usually + for)
it's curtains
This is the end. Typically refers to an adverse ending to something, or (hyperbolically or humorously) to death. It's curtains for the defending champs if they don't pull off a miraculous comeback.It's curtains for me if I don't get home by curfew. My parents will kill me!