There once was a diner at CreweThe traditional limerick contains one five-line stanza. Lines 1, 2, and 5 each contain about nine syllables and rhyme. In contrast, lines 3 and 4 contain either five or six syllables. They, too, rhyme, but differently from the other lines' rhyme.
Who discovered a mouse in his stew.
Said the waiter, "Don't shout
And wave it about,
Or the rest will be wanting one too!"
The lines are usually anapaestic. An anapest contains three syllables: two unstressed (or short) syllables followed by a stressed (or long syllable), as in the word Halloween.
Here's another limerick. This one's by Edward Lear, an Englishman who was born in 1812.
There was an Old Person of Dover,Notice that in both limericks the first line introduces a person or place (Diner, Old Person) and its locale (Crewe, Dover).
Who rushed through a field of blue Clover;
But some very large bees,
Stung his nose and his knees,
So he very soon went back to Dover.