Wash (one's) dirty linen in public American British disapproving phrase
Used to describe someone who shares with the public his/her private problem.
You can't gain trust by washing your dirty linen in public, you're just bothering other people.
If someone asks me about my past, I will say nothing at all. I don't want to wash all my dirty linen in public.
1(n) A person who talks a lot and tend to tell secrets
2(v) To tell secrets to other people
The verb "wash" should be conjugated according to its tense.
This expression is originated in France.
1. To punch a hole in one's ticket to show that they have paid for a ride
2. To do something that allows one to go further in a competition or to be promoted at work
1. Please, tell me if I forget to punch your ticket.
2. With a view to punching my ticket to the final, I did whatever it takes to win this round.