The guy on the toilet is supposed to be the usual cliché image of Rodin's "Thinker" - "on the job", as it were. Yes. Contemplating a pile of prunes - as one does. The Latin is almost certainly wrong - pidgin Latin works for me tho!
I'm curious that no one has mentioned yet either the Monty Python reference or the dead snorkeller? Perhaps they were just being polite?