The little pun that couldn't

I thought this one would make the cut on the LJDQ, but, sadly, it didn't.

1. Archimedes supposedly invented which device for the purpose of draining water from King Hieron's luxury ship, the Syracusia?

Little-known fact: Archimedes approximated the circumference/diameter ratio as 22/7, which explains his being overweight--he had a little too much pi.

...oh, well, at least the Mennonite one got in. *smiles*