I have a few old things saved.

<Yatalac> there once was a man from dundee / whose limericks would end on line three / i don't know why
<Yatalac> there once was a man from peru / whose limericks would end on line two
<Yatalac> there once was a man from verdun
<Yatalac> (and i'm sure y'all know the one about emperor nero)