clodpole

On the very next morning, a sort of clodpole, with a portmanteau across his shoulders, knocked at the door of Florence's father.

- Lesage, The Adventures of Gil Blas of Santillane, tr. Smollett, bk 5 ch. 1

see also clotpoll.

"I've turned invisible, as any clodpole with half an ounce of sense can plainly see," snorted Doli.
--Lloyd Alexander, 1968, The High King

Almost as good as squarehead. :-)