You’ve baked a really lovely cake, but then you’ve used dog shit for frosting.

The line is a blunt critique of a work whose underlying substance is strong but whose finishing choices ruin the overall effect. The “lovely cake” suggests solid fundamentals—good engineering, structure, or concept—while the “frosting” stands for surface-level decisions such as interface, packaging, messaging, or final polish. The shock value underscores an insistence that presentation is not cosmetic but integral: a single glaring misjudgment at the point of user contact can negate months of good work. Attributed to Jobs, it aligns with his reputation for uncompromising standards and for using vivid, sometimes harsh metaphors to force teams to confront quality problems immediately.