From Letters of Note:
Monty Python's Eric Idle and former British PM, John Major were born on the same day. Idle wrote this letter to Major on their shared 50th birthday:
The Rt.Hon. John Major M.P.
10 Downing Street
12th January 1993
Dear John Major,
On the 29th March you and I will both be fifty.
Has it ever occurred to you that, but for a twist of fate, I should be Prime Minister and you could have been the Man in the Nudge Nudge sketch from Monty Python?
I hope you don't feel too disappointed,
Happy birthday anyway,