Because the clockwork in the clock tower was being repaired, Big Ben wasn't tolling the hour…
Well, Parliament put an advertisement in the newspaper for someone to ring the bell on the hour.
The first fellow to show up for the position had no arms. In the interview, they asked “How can you hit Big Ben with the striker if you have no arms?”
Not to be stopped by his handicap, he took the interviewer up to the top of the tower and precisely at one o’clock, he ran full speed at the bell and hit it with his face. BONG! Big Ben sounded across London.
Unfortunately, the fellow with no arms was cuncussed, fell out of the tower and died when he landed on the street. The ambulance was called. The bobbies were called. The scene was chaos. The chief of police asked the interviewer if he knew the armless fellow.
“Well, I don’t know him personally but his face rings a bell.”