Getting your feet whet
A limerick's mostly in jest,
But must pass a most arduous test.
No matter how witty
The ultimate ditty;
It is mostly a pun an' a pest!
I've had a number of recent visitors linking from the "limerick (poetry)" citation on Wikipedia in addition to a few requests for assistance writing limericks. I can only surmise that the latter were desperately trying to finish a high school English assignment at the last minute from the nature of their requests.
Despite the name, the Savant does not claim exceptional knowledge of this form, only exceptional ego. In fact, I often violate the rules and have occasionally been accused of antidactyl dysfunction by purists who say my verse doesn't scan properly. To them, I say, "Lighten up! It's only a limerick."
For those wanting instruction, I recommend the "Limerick Discussion Page" on David Finley's site, but don't blame me if your teacher gives you the "F" anyway. If you're looking for bawdy limericks, the definitive source is The Limerick, 1979, by G. Legman but it may be out of print. And now, in the words of Edward R. Morrow, good night and good luck.
Anapaest: Wikipedia entry
(No, it's not a city in Hungary)