اللي يجوز امي اقوله يا عمي The man who marries my mother, I call him uncle.

An Egyptian proverb from wikiquote
 اللي يجوز امي اقوله يا عمي
(ilalee yajuwaz omee aquluhu ya 'amee)
Literal meaning: The man who marries my mother, I call him uncle.
Meaning: If you can't beat them, join them.