When I was a kid, we used to write our own limericks, usually to make fun of each other. Here's a chance for all you frustrated writers to spread you literary wings. This could turn out to be an epic failure, but maybe not. Definition: noun, Grammar. 1. A kind of humorous verse of five lines, in which the first, second, and fifth lines rhyme with each other, and the third and fourth lines, which are shorter, form a rhymed couplet. My entry: There once was a girl from Brazil whose husband had built her a still She threw in some fruit and then had a toot and passed out when she had her fill.