I was browsing through the taxi driver's sound files in my folder the other day and I came across this clip of him saying "Caine's blood courses through me as well. There is no need for masquerade." (line101_col_e.mp3)
What's this all about?? I haven't heard him say this yet. Does it come up later in the game? (I'm currently at the Ming Xiao Must Die part).
Extra lines are often/always made during recording sessions and may go unused it is cheaper than having another recording session.
Trust me, most of the names I have been called you can't translate in any language...they're not even real words as much as a succession of violent images.