The 'Stop It' sketch originally aired on MADtv in 2001 (Season 6, Episode 17), featuring the legendary Bob Newhart as Dr. Switzer and Mo Collins as his patient, Katherine. In the scene, Katherine visits the psychologist to discuss her phobias, specifically her fear of being buried alive in a box. After charging her five dollars for the first five minutes, Newhart provides the most blunt and cost-effective therapy ever recorded by simply shouting, 'Stop it!' every time she explains a problem. The clip became a viral sensation in the early days of YouTube and continues to thrive as a reaction video for shutting down annoying behavior or over-complicated problems. It represents the ultimate 'tough love' approach to neuroses and is frequently used to mock people who overthink or vent about the same issues repeatedly. Example captions include: 'Me giving life advice after watching one psychology TikTok' and 'When your friend complains about the same person for the 10th time this week.'