[one should remember that he was clearly the worst of the students at the lan high school. He has given up on much of the typical etiquette that they learned growing up. It happens when one's life takes as many unfortunate turns as his has.]

I'm over here because I know what lurks in that water and have no interest in being dragged back into it.

[Considering he grew up next to water and has plenty of experience with it, it is saying a lot that he doesn't want to get anywhere near it if he can help it. He also knows that Huiasang is not as helpless as the man tries to let others believe.]

I think you'll be more appreciative of the fact I can have dry clothes waiting for you when you manage to get out.