I beg to pardon - When you’re too proper to just say, 'What the hell did you j

When you’re too proper to just say, 'What the hell did you just call me?'

'I beg to pardon? Did you just call me a fool?'

'I beg to pardon? That was a bit of a slap in the face.'

He said, 'I beg to pardon? I didn’t know you were that rude.'