Limericks

There was a young boy from the sticks
Whose Limericks stopped at line six.
They started OK
But then went astray
When he found himself in a fix
Towards the end.

There was a young girl from Dundee
Whose Limericks stopped at line three.
I don't know why.

There was a young boy from Peru
Whose Limericks stopped at line two.

There was was a young man from Verdun.