be no skin off someone's back

US /bi noʊ skɪn ɔf ˈsʌm.wʌnz bæk/
UK /bi noʊ skɪn ɔf ˈsʌm.wʌnz bæk/
"be no skin off someone's back" picture
1.

ne faire ni chaud ni froid, ne pas concerner

to not be a problem or concern for someone; to not affect someone negatively

:
It's no skin off my back if you don't want to come.
Ça ne me fait ni chaud ni froid si tu ne veux pas venir.
Whether they agree or not, it's no skin off my back.
Qu'ils soient d'accord ou non, ça ne me fait ni chaud ni froid.