Abattoir Blues addresses God and spirituality in a number of songs with a dark sense of humor. In the interview with Rolling Stone Magazine, Nick says:

Yeah, I consider myself to be first and foremost a comic writer. The way I entertain myself — especially in those long and grim hours in the office — is to write stuff I find funny. That’s not to say my songs are not addressing serious concerns and things that are very meaningful to me. But a necessary part of it to me is the humor.