A rather subdued, well-mannered and soft-spoken ex-flatmate of mine once surprised us all during some moment of minor household crisis by exclaiming in frustration something that we all heard as "Flipping heck!". When someone commented how unusual it was to hear such language from her, she did not think there was anything wrong with it. She said the only thing she found unusual about the expression was how anyone could be expected to "flip a neck"...