The official rules are here:
http://www.daen.dk/archives/000146.html
My favorite, author unknown, is:
'Jiggeroff Popperoff
Vyacheslav Molotov
Wooed a young coed at
Leningrad U.
With blini and vodka and
Trinitrotoluene,
They discussed Marx over
Cocktails for two.'
Or maybe:
'Higgledy-Piggledy
Professor Schrodinger,
"The Final Solution?
Kitties? Oi veh!"
Very strange your form of
Quantumfelinacide
Was overlooked by the
SPCA.'
Finger De Lickety
Roy Albert Chicken
Intergalactical
Messer of minds
He is Mathmatical
Double Didactical
Stays up late playing chess
Eats Coffee grinds.
Here is the forumula….. I think I hit it.
A dactyl, as you may know, is a poetic foot of the form >-- (ON-off-off). For example, interstate, realize, microphone, cereal, limerick, etc. etc. A double dactyl, naturally enough, is two dactyls in a row.
A double dactyl is also a poem... Quite like a limerick, it has a rigid (if peculiar) structure. Two stanzas, each comprising three lines of dactylic dimeter followed by a line with a dactyl and a single accent. The two stanzas have to rhyme on their last line. The first line of the first stanza is repetitive nonsense. The second line of the first stanza is somebody's name -- strictly speaking, a proper noun. Note that this name must itself be double-dactylic. E.g. Gloria Vanderbilt, Jesus of Nazareth, Gilbert and Sullivan, Archangel Gabriel. In the second stanza, one entire line must be a double-dactylic word. E.g. biopsychology, geopolitical, gastrointestinal, abecedarian, etc. etc.
P-