A bit O/T, but presumably you meant "cupboard" doors. What I'm curious about is was this just a stretch of an autocorrect, or if English is a second language, as I could see that it might be a plausible approximation of cupboard if you'd only ever heard the word. I find this kind of thing fascinating, as when I'm trying to learn another language it's all too easy to hear something and switch it to another word that's close enough phonetically.