give the shirt off one's back(redirected from would give you the shirt off back)
give (someone) the shirt off (one's) back
To act in a very generous and selfless manner. I'm not surprised that Tammy loaned you money—she would give anyone the shirt off her back.
give the shirt off one's back
Give anything and everything one possesses. For example, Tom is truly generous-he'll give you the shirt off his back. This hyperbolic idiom was first recorded in 1771.