I was talking to a colleague the other day about what we were doing for Christmas, and he said he was heading off early because he had to go and collect his mum from the airport. He cycles everywhere, so I jokingly said "Are you going to give her a croggy?" He had no idea what I was talking about, and after I had hurriedly explained what it was, i.e. not a euphemism for something dodgy, he said "Oh, you mean a backie". I had never heard of that term - but a quick straw poll round the office revealed that everyone else called it a backie as well. We're all from various parts of Yorkshire, for reference, but I am the only one from North Yorkshire...
I am sure I haven't invented the term croggy, so I'm wondering if it's one of those regional oddities where only people from one specific town say it.
Where do you stand on the backie/croggy issue, and where did you grow up?