drop dead

drop dead

1. (intransitive) to die suddenly.
2. (intransitive, figuratively) to be appalled or mortified.
   • 1965, James Holledge, What Makes a Call Girl?, London: Horwitz Publications, page 90:

     `My parents would drop dead if they knew,' she said.

drop dead

1. Used angrily to express disgust, contempt, derision, etc., toward another person.

• drop-dead

• dead drop