He hangs out the dirty linen, to the public.
More Hungarian Proverbs:
He makes the hare spring out of the bush.Hungarian
If the cat's away, the mice will dance.
Hungarian
He that is afraid of water, will not get into the boat.
Hungarian
It is easy to push a cart drawn by twelve oxen.
Hungarian
He turns like a weathercock.
Hungarian
Running is away is a shame, but it is useful.
Hungarian