That sign reminds of driving a van back from Prague on my own, after a friend had moved there. A day of driving a RHD van on the wrong side of the road, with no rear windows, plus all the associated dealings in Czech, German and French, had my head still spinning when I came down for breakfast the next morning in Dunkirk, before heading for the tunnel.
Getting access to the breakfast required me to state my room number.
It was 229.
I told the poor woman that it was "dva, zwei, neuf" - and she didn't bat an eyelid.