Gorgeous companions frequently can be insulting (4,4)

I believe the answer is:

drop dead

I'm a little stuck... Click here to teach me more about this clue!

'gorgeous' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for drop dead that I've seen before include "Suddenly fail" , "Really offensive remark" , "to appear so gorgeous" , "Absolutely (gorgeous)" , "Way to go!" .)

I've seen this clue in The Irish Times.

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