have someone's ass in a sling

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have (one's) ass in a sling

1. rude slang To severely punish or berate one for a wrongdoing. When the boss finds out I haven't handed in my budget yet, he'll have my ass in a sling.
2. rude slang To be sad, upset, or disappointed (possibly due to having been punished). A: "Why does Phil have his ass in a sling today?" B: "I think the boss wasn't thrilled that he handed in his budget late." I hope you don't have your ass in a sling because of the things I said to you—I was just joking!
See also: ass, have, sling
Farlex Dictionary of Idioms.

have someone's ass in a sling

or

put someone's ass in a sling

AMERICAN, INFORMAL, RUDE
If someone has someone else's ass in a sling or puts someone else's ass in a sling, they punish them or cause trouble for them. I'm willing to bet Harris would put my ass in a sling for doing it. Note: You can also say that someone's ass is in a sling, meaning that they are in a difficult situation. His ass is in a sling and he knows it.
See also: ass, have, sling
Collins COBUILD Idioms Dictionary, 3rd ed.
See also:
  • sling
  • nail somebody to the wall
  • nail someone to the wall