double dactyls.

Wikipedia.

fig 1: King John.

Higgledy-piggledy
young Philip Faulconbridge,
son of his father he
wasn't at all—
learning his getting was
extracurricular
gave Phil a reason at
last to stand tall.

fig 2: Doctor Faustus.

Higgledy-piggledy
Faustus of Wittenberg
autodidactically
summoned from Hell
one whom the adjective
Mephistophelian
fit like a glove (i.e.
really quite well).

fig 3: Le petit prince.

Higgledy-piggledy
A. Saint-Exupéry,
flyer of planes and a
writer of books,
once drew a picture whose
idiosyncrasies
made it look hat-like and
earned him odd looks.

fig 4: Ninety-Five Theses

Higgledy-piggledy
Martin of Wittenberg
wrote out some theses and
stuck them on high:
reading this treatise most
multisyllabical,
many good Germans bid
Rome a good-bye.