Bill: Well, Tom and I have already fought very badly really often. It's really that we beat each other with all kinds of things we can get, and with chairs and with tables and so on. Now and then we really bandy.

[…]

Tom: I plan it if I want to fight with Bill.
Bill: Yes, exactly, you also know which topics and arguments you have to talk about to start a fight and smash the other's face in.

Thanks to Tokio Hotel info