* not to leak water between them
Idiom used here and there by Almost Everyone
It means that you are a very close friend to another person. You talk a lot with them and get along.
"2 kardeşin arasından su sızmaz, çok iyi anlaşırlar."
"Between the 2 siblings they dont leak water between them, they get along well."
Added July 2020 by handetorun