The Limerick English Verse Form: a  nonsense poem of five anapestic lines, now often bawdy, usually with the rhyme scheme aabba, the first, second, and fifth lines having three stresses, the third and fourth having two [definition from Webster's New World Dictionary]
WWW Links: Limerick of the Day Loony Limericks	Said the Cardinal to Mother Superior "Your singing is quite inferior!" She, not to be crass, did show some real class Said,"You can kiss my posterior!"
An epicure dining at Crewe Found a very large bug in his stew. Said the waiter, "Don't shout And wave it about, Or the rest will be wanting one too."	There was a young woman named Bright Whose speed was much faster than light. She set out one day In a relative way, And returned on the previous night.	A flea and a fly in a flue Were imprisoned, so what could they do? Said the fly, "let us flee!" "Let us fly!" said the flea. So they flew through a flaw in the flue. --Ogden Nash
There was a lady who triplets begat Nat, Pat and Tat It was fun breeding But trouble feeding Cause she didn't have a tit for Tat.	A nudist girl wearing three raisins A masquerade prize was her goal. The judges said, "Lookie, From the front she's a cookie, From the rear she's a Parker house Roll."	There was a young lady named Harris, Whom nothing could ever embarrass Till the bath salts one day In the tub where she lay Turned out to be plaster of Paris. --Edward Lear