Zombie threads - we need a pop-up

[PerspicaciaTick]

People ignore the zombie thread warnings. They ignore other posters telling them it is a zombie thread.
We need some sort of pop-up or tickbox that asks the poster to confirm they so desperately want to post on a zombie thread that they are happy to take the risk of looking daft.
(And then automatically adds "I know this is a zombie thread but I'm posting regardless" to the top of their post in red).