Create a rule entitled “Shanty” with the following text:

Every pirate crew should ‘ave its own signature sea shanty. Performing duties to a good tune helps pass the time.

Often, any Swashbuckler may add one italicized word to the end of this rule, and optionally any punctuation that would be immediately adjacent to this word (such as a comma or new line of text). Each line of text may not contain more than ten syllables. Any addition must be grammatical, and if it does not complete a stanza, must allow for a grammatical conclusion to the stanza. Between every four lines of text (hereinafter referred to as a stanza) there must be a double space (i.e. two new lines). In every stanza, the last words of the second and the fourth line shall rhyme. Periods may only be used at the end of each stanza. The added words should tell a pirating story, but are not required to.

Paragraphing, and similar formatting, may be altered by the Captain at any time. The Captain may also delete italicized words from the end of the rule at any time.

All the credit goes to Excalabur.