Zerren translates to 'to tug', 'to pull', or 'to drag'. It is a highly expressive verb that implies a sense of physical strain, rough handling, or urgency, making it much stronger than the basic German word for pull (ziehen).
In the song, the lead singer complains, "Alle zerren an mir" (Everyone is tugging at me). He uses this vivid word to describe the intense pressure and demands of the outside world, contrasting it perfectly with the quiet, peaceful escape of hiding away in a hotel room.
Welcome to the hotel! Specifically, "Zimmer vier acht drei" [Room four eight three], a little nod to the number of Tokio Hotel's first rehearsal space. The song sets up a scene in a dark hotel room where the only light comes from the minibar. The speaker invites someone in, saying "Okay komm doch erstmal rein / Der Rest geht von allein" [Okay, come on in / The rest will happen on its own]. It's a classic setup: two people, alone, in a private space, shutting out the rest of the world.
The whole point of the meeting was supposedly innocent. The chorus repeats, "Wir wollten nur reden" [We just wanted to talk], but the very next line reveals what actually happened: "Und jetzt liegst du hier / Und ich liege daneben" [And now you're lying here / And I'm lying next to you]. It's a song about how quickly an intention to just talk can turn into something much more intimate, especially when the outside world, with all its demands, is banging on the door.