Found at Laudator Temporis Acti (Gilleland's post contains other amusements of this ilk, too.)
I know a little man both ept and ert.
An intro-? extro-? No, he's just a vert.
Sheveled and couth and kempt, pecurious, ane,
His image trudes upon the captive brain.
When life turns sipid and the mind is traught,
The spirit soars as I would sist it ought.
Chalantly then, like any gainly goof,
My digent self is sertive, choate, loof.