Slaughter house-Five (chapter 7)

There's only one thing that came through my mind as I read this chapter. When Billy's plane crashed, the only thing he said to his rescuers was “Schlachthof-funf.” (Slaughter house five, a phrase he used to ask for his prison if he got lost.

What this means is that being in the prison must have been a really dramatic experience for him. Normally, when you find yourself in an accident, you would say something more useful for the moment, like asking for help but in his case, he only said “Schlachthof-funf.”

This could mean two things. First of all, that Billy was lost, and he used that phrase as an attempt to be rescued. On the other hand, it could be interpreted as if Billy had suffered severely in his prison and he couldn't take that memories of his head. Maybe, all of his travels through time were created by him in order to forget the amount of suffering (and I mean mentally,)that he experienced in prison.