Donniker
A portable rest room or toilet. Possibly derived from the need to pull down one's knickers in the outhouse. In Australian slang today, an outhouse is a "dunny".
The Donniker at the concert smells real bad.
donniker flogger
A stick,coat hanger or anything handy used to break apart huge pieces of shit for stool flushing ease.
My turd log was so big I needed a donniker flogger to chop it up.