know somebody/something inside out

US /noʊ ˈsʌm.bə.di ˈsʌm.θɪŋ ˌɪn.saɪd ˈaʊt/
UK /noʊ ˈsʌm.bə.di ˈsʌm.θɪŋ ˌɪn.saɪd ˈaʊt/
"know somebody/something inside out" picture
1.

conoscere a menadito, conoscere perfettamente

to know someone or something extremely well

:
She's worked here for twenty years, so she knows the company inside out.
Lavora qui da vent'anni, quindi conosce l'azienda a menadito.
He's a local, so he knows this area inside out.
È del posto, quindi conosce questa zona a menadito.