I found this puzzle in a book which attributed it to the British Monthly Games & Puzzles.
I have adapted it somewhat.
How many limericks [allowing for variations in form] are listed here?
There was a young girl in Japan
Whose limericks never would scan.
___ When someone asked why,
___ She said, with a sigh,
"It's because I always attempt to
get as many words into the last
line as I possibly can."
Another young poet in China
Had a feeling for rhythm much fina.
___ His limericks tend
___ To come to an end
There was a young lady of Crewe
Whose Limericks stopped at line two.
There was a young man of Verdun.