a writer with a 'tin ear' for dialogue [=who writes dialogue that does not sound real]
My wife is a talented musician, but I have a 'tin ear'.
a 'tin' of biscuits/tobacco
(..) Whoa, whoa, whoa. What was that? She hit that. I saw that with my own eyes. Hey, buddy, let me explain something to you. You see that little tin spaceship? You see how it's not knocked over? Do you know what that means, professor? It means you don't get the unicorn! (..)2010 Despicable Me