Limerick: a refrain containing a nonsense poem of five anapestic lines, now often bawdy, usually with a rhyme scheme aabba, the first , second, and fifth lines having three stresses, the third and fourth having two.
For some reason, they are often centered around a man in Nantucket.
There once was survivors in Thailand
Stranded on Koh Taratau Island
But Ted had to grind
on Ghandia's behind
and she was left screaming and cryin
There once was a pornstar named Brian
who was left on a tropical island
But Jan was too droopy
for him to make whoopy
so now he's frustrated and dyin
(originally posted in the Haiku section)