odds
Explanation
The Joke
A man confronts his wife about cheating on him. She asks what the odds are that she'd be caught, and he says "100%, exactly, soon." She then asks what the odds are of her cheating on him "with Dave," and he says it's "the game" (presumably a card or board game they were playing). She rephrases again, asking what the odds are of her cheating on him while wearing a specific outfit, and again he answers "the game." The conversation keeps shifting from an accusation of infidelity to a probability and statistics discussion.
The wife is exploiting the ambiguity of the word "odds" and the phrase "cheating." She keeps reframing the question so that "cheating" refers to cheating at a game rather than marital infidelity, and "odds" refers to mathematical probability rather than the likelihood of getting caught. By the final panels, the husband realizes that if he looks at it from a Bayesian perspective, the odds of her cheating at "the game" with Dave are actually quite high, and the couple ends up watching a game together -- having deflected the entire confrontation through pedantic reinterpretation.
The Humor
The comedy comes from the wife's ability to weaponize statistical and semantic ambiguity to dodge a serious marital accusation. Each time the husband tries to pin her down, she shifts the meaning of "odds" and "cheating" into an innocent context. It satirizes how sufficiently clever reframing of language can make any accusation dissolve into harmless-sounding statements -- a common SMBC theme of taking logical or mathematical reasoning to absurd extremes in everyday life.