Remember, remember the Fifth of November,
Gunpowder treason and plot,
I know of no reason
Why gunpowder treason
Should ever be forgot.
Guy Fawkes, Guy Fawkes, t'was his intent
To blow up king and parliament.
Three-score barrels of powder below
To prove old England's overthrow;
By God's mercy he was catched
With a dark lantern and burning match.
Holloa boys, holloa boys, let the bells ring.
Holloa boys, holloa boys, God save the King!
It's in one of the Paddington Bear books, if you don't remember. Which one?