Heartburn on your arse

Figure of speech. Simon Dedalus responds to the excesses of Dawson's speech with a strained image: "Agonising Christ, wouldn't it give you a heartburn on your arse?" Heartburn is a serviceable metaphor for the discomfort he feels, but the arse is a strange place to locate it. Later, Lenehan uses the word "expectorated" in place of "expected." Both utterances are examples of catachresis, the (sometimes deliberate) misuse of language.

John Hunt 2023

Chrysanthe Tan's discussion. Source: twitter.com.

Cartoon by Mike Lester. Source: www.linkedin.com.

Source: dankingsepp.wordpress.com.