“What did you say? Listen, I don’t have to take that. You’re liable to get backhanded right off that stool someday.”
“See if I care one bit. That's all I need. Go ahead if it'll make you happy. Knock some teeth out while you're at it.
"Forget it. I was kidding."
“[…] I still got a few of my own in there the others were nice enough to leave me.”
Fat City by Leonard Gardner (1969)
Does it mean "exactly above" that stool or "you are going to get backhand that will send you flying off that stool."?