pull the carpet/rug out from under somebody's feet(redirected from pull the rug out from under somebody's feet)
pull the carpet (out) from under (one's) feet
To suddenly or unexpectedly remove or rescind support, help, or assistance from one; to abruptly cause one to be in a problematic or difficult situation. I felt like someone had pulled the carpet out from under my feet when my health insurance said it was going to stop paying for my medical bills. I'd love to up and quit my job, but I just can't pull the carpet from under their feet like that.