How to Write a Limerick. A limerick is a short, comical, and almost musical poem that often borders on the nonsensical or obscene. It was popularized in English. The Rules of Limericks. Limericks, like all poetic forms, have a set of rules that you need to follow. The rules for a limerick are fairly simple: They are five lines. Limericks are one of the most fun and well-known poetic forms. They are Limericks, like all poetic forms, have a set of rules that need to be followed. The rules. To some var ious du bious fe males. But 1, 2 and 5 should match each other, and 3 and 4 should match. And sometimes it's just a matter of finding the right initial word to set up your rhymes! They can switch word order and even stray from standard Video slot online grammar and punctuation rules. When he read on the door "Do not spit on the floor ", He jumped up and then spat on the ceil ing! Wrap up the story with a punchline.