Yes, Sir. Sorry, Sir! (Cantonese: 點解阿Sir係阿Sir), is a 2011 Hong Kong television drama starring Moses Chan, Linda Chung, Tavia Yeung and Ron Ng. Produced by Lau Kar Ho. Yes Sir. Sorry, Sir! is a TVB production. "阿Sir" is a way to address both teachers and policemen. The meaning of the title is "So it turns out '阿Sir'(teacher) was an '阿Sir'(policeman)".