 After threat of a lawsuit alleging infringement of copyright and trademark, some sticker makers replaced Calvin with a different boy, while other makers made no changes.Watterson wryly commented, "I clearly miscalculated how popular it would be to show Calvin urinating on a Ford logo," but later added, "long after the strip is forgotten, [they] are my ticket to immortality".Watterson has expressed admiration for animation as an artform.