wouldn't be caught dead (doing something)

wouldn't be caught dead (doing something)

Would never do the thing being discussed; would be horribly ashamed or embarrassed to do something. I wouldn't be caught dead wearing that shirt. You can burn it for all I care. She had always said she wouldn't be caught dead working for that company, but I guess everyone has their price.
See also: caught, dead
Farlex Dictionary of Idioms.

caught dead, wouldn't be

Also, wouldn't be seen dead. Would have nothing to do with, detest, as in I wouldn't be caught dead in that outfit, or He'd not be seen dead drinking a cheap wine. This hyperbole is always put negatively. [Colloquial; first half of 1900s]
See also: caught
The American Heritage® Dictionary of Idioms by Christine Ammer.

somebody wouldn’t be seen/caught ˈdead...

(spoken) used to say that you would not do a particular thing because you would feel stupid or embarrassed: I wouldn’t be seen dead in a hat like that. She wouldn’t be caught dead in a place like this.
See also: caught, seen, somebody
Farlex Partner Idioms Dictionary
See also:
  • caught dead, wouldn't be
  • somebody wouldn't be seen/caught dead...
  • chisel
  • chisel out of
  • chiseled
  • cast (one's) eyes down
  • cast eyes down
  • your heart is in the right place
  • your, his, etc. heart is in the right place
  • (one's) heart is in the right place