“’Choo fall over for?” sniggered Stan In the Chapter 3 of "The Prisoner of Azkaban" Harry was picked up by the Knight Bus, the conductor of which spoke with a non-standard accent. In the text that was expressed by a not correct spelling like: “What were you doin’ down there?” “Woss your name?” “but for fifteen you get ’ot chocolate, and for fifteen you get an ’ot water bottle an’ a toofbrush" “You ’ave this one” “Take ’er away, Ern” That is quite clear: doin' = doing; woss = what is"; 'ot = hot; an' = and; 'ave = have; take ’er away = take her away, Erny (make the bus going). But I can't get this one: “Fell over,” said Harry. “ ’Choo fall over for?” sniggered Stan. or “ ’Choo lookin’ at?” said Stan. “There was a big black thing,” said Harry, pointing uncertainly into the gap. What that " 'Choo" may be for? And what sort of accent was here imitated?