Armed with a microphone and a captive audience of thousands, tube drivers are known to try-out their best quips from time-to-time.
Every genre of humour is heard across the carriage Tannoys, from sarcastic and cheeky, all the way to the sardonic.
Whether a regular commuter on the London Underground or a tourist getting about the UK capital for a few days, it is likely most passengers have heard a one-liner in the past.
