It is the result of eating a red hot curry and the effect on your natural bodily functions. It is easily identified by the orangey colouration and the burning pain caused when you visit the toilet.
"hey man i just went to the toilet after jacks mum after she had that vindaloo, and there was fiery bum gravysplatteredall over the walls. Man she really needs to clean up after herself that was vile."
well this happens a milli-second after a cough, sneeze or a little fart, it is the watery shity stuff that skids your boxers, sometimes you arnt sure if it has happened and have to check, other times you know for sure. bum gravy