Prince of Darkness (1987)
Robert Grasmere: Frank Wyndham
[Wyndham is being consumed by beetles]
Wyndham : I've got a message for you, and you're not going to like it.
Brian : Look at his chest!
[Wyndham's suit coat opens to reveal swarms of beetles]
Wyndham : Pray for death!
[Wyndham's head falls off, and his body starts coming apart]
Brian : [in horror] Jesus Christ!