Phonetic or slangspelling of the word 'do' and the German word 'du', meaning 'you'. Du hash.
Du what u gotta du. Why don't u du ur homework? Du ur job, man. I du things u don't du. Well, during this period u haven't been duing ur assignments. Du u get me?
A really fucked up substance the americans use to coat shells / bullets so that they go through tanks. PS this has also fucked Iraq up so much that if you go there youll probably get cancer within about 5 minutes of getting there