the shirt off someone's back
US /ðə ʃɜrt ɔf ˈsʌm.wʌnz bæk/
UK /ðə ʃɜrt ɔf ˈsʌm.wʌnz bæk/
1.
to be extremely generous, to give everything one has
:
•
He's so kind, he'd give you the shirt off his back if you needed it.
•
My neighbor is the kind of person who would give you the shirt off their back.