v. phr. , informal To see or hear (someone) in an embarrassing act or place at any time. Used in the negative usually in the passive. You won't catch Bill dead taking his sister to the movies. John wouldn't be caught dead in the necktie he got for Christmas.
CATCH (SOMEONE) DEAD
Meaning of CATCH (SOMEONE) DEAD in English
American idioms English vocabulary. Английский словарь американских идиом. 2012