Double...Dactyl...Done

or,

Mercifully, Moving On

Double-ly dactyl-ly
A. Mouse—O. Nonymous—
Writes the odd poem (he
     Says) just for fun.

Incomprehensibly,
Lately he wrote all these
Weird double dactyls…but
     Now says he’s done. 

              —D. D. Donymous