Explain SMBC — the wiki for Saturday Morning Breakfast Cereal

The comic is titled "Fun With Language! Episode #6283: Half-Euphemisms" and presents a series of vignettes where characters use phrases that are half euphemism and half literal terminology. For pregnancy: "bun in the uterus" (combining "bun in the oven" with the anatomical term). For sex: "horizontal copulation" (combining "horizontal mambo" with the clinical term). For testicles: "family balls" (combining "family jewels" with the crude term). For male genitalia: "one-eyed trouser penis" (combining "one-eyed trouser snake" with the anatomical term). For fighting: "had words" leading to the reveal that the most common words were "fuck and you."

The humor comes from the awkwardness created by mixing registers of language. Euphemisms work by completely replacing a taboo word with an innocuous one, but these "half-euphemisms" defeat the purpose by retaining just enough of the explicit term to make the phrase uncomfortable. The fighting example works slightly differently -- "had words" is the euphemism, and the punchline reveals the literal words, which themselves are profane.