Limericks comprise the noblest form of Poetry. For acts most immoral Among the reefs coral, Such as writing graffiti on snails. You can find a good set of limerick rules here .
All sonnets have fourteen lines of five-foot iambic verse.
Well, a foot consists of a group of syllables, one of which is accented. An iambic foot contains five feet. There bounds the isles blue waters to keep free Those golden lands that hold the verdant vales Crouched impervious to the roiling sea England, Ireland, Scotland, glorious Wales. Thus spew the ribald in snorkeling gear Sent from the earth where births intrepid Welsh. Graffiti are writ large upon the snails.