I remember watching a movie as a kid that was a horror and one of the kills stuck out to me. They were in a room and a trap was set up to kill one of them. Somebody yells duck as they have worked out the trap and a woman says “where?” And the trap slices her brain out of her head and it falls into a bin.

I don’t remember anything more than this but I must’ve watched it over 14 years ago.

Thanks in advance :)