Turn in (one's) badge verb phrase
To not working anymore.
Karen just turned in her badge this morning. What a shame!
Your health condition is getting worse. I think it's time for you to turn in your badge.
To stop doing one's current activity
To reside somewhere
To retire from work or quit doing something
1. To stop, delay or diminish something
2. To ignore or end social contact with someone; to separate someone from others
To stop playing in a sport
The verb "turn" should be conjugated according to its tense.
A humorous way of saying that what one has said is just what they acknowledge and may not be entirely accurate
Mike: Have you returned from your vacation on the beach? Your skin seems to get tanned.
Jenny: My skin is always dark. That's my story and I'm sticking to it!