often described as a hangover shit : picture your bum throwing up .
essentially a nightmare for shared toilets .
-"too right , she went out last night, that'll be the first BUM CHUNDER of today . lets hope she makes it to the loos" .
However depite the aforementioned bumchunder looking like food, it is inadvisable to consume bumchunder, as this action may result in "Mouthpoo", or actual chunder if you prefer.