The phrase "gotta cancer stick johnnycake" appears to use a form of slang or colloquial language rather than a specific literary device. However, it can be analyzed for its use of metaphor and synecdoche.
-
Metaphor: The term "cancer stick" is a slang term for a cigarette, implying that smoking cigarettes is like inviting cancer. This metaphor highlights the dangers of smoking in a creative way.
-
Synecdoche: If "johnnycake" is taken as a representation of a broader cultural or regional aspect, it can be seen as synecdoche, where a part (the cake) represents a larger concept (regional food or culture).
In a broader sense, the phrase may also evoke colloquialism, as it reflects a casual or informal way of speaking, indicative of a specific social or cultural group.