I've never heard that in BrE though we use "dead as a doorknob".

Interested in Language
How about:
deader than a door knob.
I've never heard that in BrE though we use "dead as a doorknob".
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
One of my favorites:
"Elvis has left the building!" (The show has come to an end. It's all over.)
"He puts himself on a pedestal" is one that came to mind recently.
"Speak of the devil!" (Used when the person you have just been talking about arrives.)
"Hit the nail on the head" is a good one.
"Don't give up your day job!" (You are not very good at something. You could definitely not do it professionally.)
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
I only know "Deaf as a doorknob/doornail".
http://idioms.thefreedictionary.com/...+as+a+doorknob
"Deaf as a post" in BrE!
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.