Did you leave your brolly in the boot of your car? If the phrase makes immediate sense, you might be British.
We share a language with the United Kingdom, but there are many differences in the version we speak in the United States.
Lynne Murphy is perfectly situated to research and write about the differences, being from here and living there, in England. Her blog "Separated by a Common Language" grew into a book, The Prodigal Tongue. We get Lynne Murphy on the phone to talk about the antagonism between wings of English speakers.