There was a young bard of Japan

Original Text: 
A Century of Humorous Verse 1850-1950, edited by Roger Lancelyn Green (London: Everyman, 1959): 289.
1There was a young bard of Japan
2Whose limericks never would scan;
3     When they said it was so,
4     He replied: `Yes, I know,
5But I make a rule of always trying to get just as many words into the last line as I possibly can."
RPO poem Editors: 
Ian Lancashire
RPO Edition: 
RPO 1999.