[1] The lyrics of Die Kassierer's songs are mainly about drugs, sex, violence, strange phenomena – such as aliens – and the region the band comes from.

Die Kassierer have been criticized for making what has been considered aggressive and socially as well as sexually disorienting music, but up to now only the album Habe Brille (I got glasses) has been officially indexed as harmful by the "Bundesprüfstelle für jugendgefährdende Medien" (Federal Department for Media Harmful to Young Persons).

Further attempts to label other LPs of Die Kassierer have been blocked by the courts because their songs were deemed satirical and socially critical enough to qualify as art.

In honor of the 20th anniversary of the band in 2005 nineteen artists, including the Donots, Die Lokalmatadore, Hennes Bender, Emscherkurve 77 and Mambo Kurt recorded songs of Die Kassierer for a tribute album, also called "Kunst".

Bela B. and Rodrigo González from Die Ärzte played under the pseudonym 2 fickende Hunde (2 Fucking Dogs).