A similar thing happened in the UK , the tax man got narky with a food manufacturer over a cake/biscuit (cookie for our American friends) distinction. Cakes and biscuits are taxed differently.
This little blog-post thing explains it better than I could.
I know someday you'll have a beautiful life
I know you'll be a star in somebody else's sky
But why, why, why can't it be, oh can't it be mine?