Paul Bunyan

n. An extremely large, thick and singular bowel movement.

--Following from the popular slang term "grunt log" refering to the same meaning, Paul Bunyan also refers to a large breakfast, which can infer a large future bowel movement. Paul Bunyan, of course, is the mythical American giant lumberjack who cleared the way for colonial expansion. He had a sidekick---a giant blue ox named Babe.

I had such a Paul Bunyan this morning after I woke up, that I couldn't stand up from the toilet for ten minutes.