] The seemingly interminable questioning had already lasted ] for hours. 'I needed the toilet,' Mubanga said, 'and I ] asked the interrogator to let me go. But he just said, ] "you'll go when I say so". I told him he had five minutes ] to get me to the toilet or I was going to go on the ] floor. He left the room. Finally, I squirmed across the ] floor and did it in the corner, trying to minimise the ] mess. I suppose he was watching through a one-way mirror ] or the CCTV camera. He comes back with a mop and dips it ] in the pool of urine. Then he starts covering me with my ] own waste, like he's using a big paintbrush, working ] methodically, beginning with my feet and ankles and ] working his way up my legs. All the while he's racially ] abusing me, cussing me: "Oh, the poor little negro, the ] poor little nigger." He seemed to think it was funny.' ] Yet Mubanga, though traumatised by his ordeal, believes ] he stayed sane partly because of his growing religious ] faith, and partly because of his rapping. He has a ] provisional title for the album he'd like to record: ] Detainee . He also has a stage name - 10,007, his ] Guantanamo prisoner number. The content of his work is ] strongly political. There were times, Mubanga said, 'that ] I wanted to explode. And when I did, I tried to remember ] Allah, not to use aggression in that way. I never fought ] any of the guards, I never spat at them, or like some ] prisoners did, threw a packet of faeces. A lot of the ] time you go on to autopilot and you just have to tell ] yourself you're still here, it is happening, it is real. ] The golden rule a lot of us had is, if you don't feel ] tired, don't force yourself to sleep, stay active. That's ] why I made myself learn Arabic. The Observer | How I entered the hellish world of Guantanamo Bay |