The double dactyl is a limerick-like form of poetry created by Anthony Hecht and John Hollander back in the 60s. For fun, I've written one. Enjoy:
Diddeley, Iddeley
George "the Shrub" W
Won re-election in
Two thousand four.
Librul conspiracists
Hypersuspiciously
Cried that e-voting fraud
Crowned him once more.
Isn't this just dactylic dimeter? Like the old lesser Roman poets used to do? e.g. dirty old Marcus Argentarius?
Well, yes, it, but there are several other rules. The first line must be nonsense, the second line must be a proper name, and one line must be a single word.