put the tin hat on (something)(redirected from put the tin hat on it)
put the tin hat on (something)
To finalize, or finish off, or mark the end something, especially in a forceful, decisive, or dramatic way. Primarily heard in UK. What put the tin hat on it for me was his insistence that we maintain the same direction for the next financial year. I put in my resignation the very next day. The downgrading of the company's credit rating puts the tin hat on a disastrous year for their financial situation.