have the shirt off (one's) back(redirected from had the shirt off their backs)
have the shirt off (one's) back
To unscrupulously take large quantities of money from one and cause one hardship. Those contractors will have the shirt off your back if you hire them. I mean, I paid them an exorbitant amount for shoddy work.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.