tell about one`s private quarrels or problems where others can hear His personal problems are nobody else`s business and he doesn`t like his wife to air his dirty linen in public when they go out with friends.
AIR ONE`S DIRTY LINEN IN PUBLIC
Meaning of AIR ONE`S DIRTY LINEN IN PUBLIC in English
English idioms vocab. Словарь английских идиом и выражений. 2012