, titled "A Stunted Childhood and a Can of Fancy Mixed Nuts" , is a landmark episode in the series that originally aired on December 6, 2018 . For fans of The Big Bang Theory , this episode is particularly significant as it finally reveals the origin story of Sheldon Cooper's iconic catchphrase: "Bazinga!" . Episode Plot Summary
Meanwhile, a major B-plot involves Sheldon's grandmother, , and her boyfriend, Dr. John Sturgis (Wallace Shawn) . Meemaw attempts to teach the brilliant but eccentric Dr. Sturgis how to drive, which puts a significant strain on their relationship as his intellectual approach to operating a vehicle clashes with the practical demands of the road. Key Episode Highlights young sheldon s02e10 hdtv