When JC allegedly muttered it under his breath, he was seated thus no record on the official transcript, no retrospective action from The Speaker as he allegedly heard nothing. So really a bit of a non-story.
On another slant I would imagine "Twat!" is a common response to lots of answers from both sides, but we don't hear it.
On another slant I would imagine "Twat!" is a common response to lots of answers from both sides, but we don't hear it.