be your own lookout
idiomPart oflookout
be your own lookout — idiom
1. used to say that someone is responsible for their own problems or choices, espec
1.idiom
Definition
used to say that someone is responsible for their own problems or choices, especially when the speaker does not agree with them
Example
If Sari wants to quit school and travel the world, that's her own lookout.
Andrew refused to listen to our advice, so it's his own lookout if things go wrong.