The Chapstick Challenge, or Chapstick Trend, is a viral internet phenomenon that has seen multiple iterations across platforms like TikTok and Twitter. Initially starting as a playful 'guess the flavor' challenge between friends or couples, it later morphed into a more somber trend where users would show a tube of lip balm with the implication that they would 'end' something once the tube was finished. This darker version became a symbolic way for users to discuss mental health or life transitions, though it is also widely used for absurdist humor and relatable jokes about how no one ever actually finishes a whole tube of chapstick before losing it.