Most dark comedy stumbles into crude shock value comedy. An amateur comic mentions a taboo subject, infanticide, terminal illness, tragedy, and expects the sheer discomfort of the topic to generate laughs. Jeselnik operates on the exact opposite principle. The subject matter is never the joke. The joke is the sharp linguistic trap that exposes how predictably our minds fill in blanks.
Consider his classic line from his early club days: "My mom should have been woman of the year. It takes a lot of guts to raise three kids... alone. Especially when your husband won’t stop coming home."
The sentence structure relies on an absolute economy of words. The opening clause sets up an archetype of single motherhood and domestic struggle. The brain instantly pictures abandonment or widowhood. Jeselnik lets that moral assumption harden before inserting a seven-word subordinate clause that recontextualizes the father's presence as an ongoing domestic horror. He gives listeners zero room to breathe between the pivot and the punchline.
The punchline reveal structure works because the audience builds the scaffolding of decency, and Jeselnik merely kicks it down. You laugh not because you celebrate tragedy, but because you were caught participating in a cognitive setup you failed to anticipate.