jaz 
Those of you travelling by train to #Cardiff for #TootWales today, please be aware it is mandatory to say/whisper/scream "Tŵt Tŵt" as you leave the station.
Thank you in advance for your compliance.
Richard Penner@jaz I’d be there to tŵt, but I’ve been indoors so long, I’m afraid I might get lost in a cwm.