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.
Gomez @jaz I am going in the opposite direction but I have Tŵt Tŵt'ed 4 times in the last 24 hrs.