Dumper Bowl (not to be mistaken for the athletic event, The Dumperbowl) is a synonym for words such as: the tush cushion, the halo bowl (only applies to fish), swirly station, HWDC (Human Waste Disposal Closet), the #1/#2 irrigation center, and most commonly known as the toilet.
Jerry: "I just emptied some freshly cut logs into the Dumper Bowl if you know what i mean." ... "No not the athletic event."
While pooping, one's stomach begins to converse with oneself through morse code, often giving helpful life tips and warnings; also known as the fortune cookie of the body.
Doctor: "Has anything unusual happened to you lately?"
Steve: "Well, I had a case of Abdodiphrass last night."
-- Last night --
Steve: (Whistles on toilet)
Steve's stomach: (taps) "Cover nose."