George Cooper House on Instagram: "Audrey getting lectured 😭😂😂 Young Sheldon is a spin-off prequel to The Big Bang Theory, focusing on Sheldon Cooper as a child genius growing up in East Texas in the late 1980s and early 1990s. The show follows 9-year-old Sheldon (played by Iain Armitage) who skips grades and starts high school at age 9, then later attends college as a pre-teen. Despite his extraordinary intellect (he's basically a walking physics textbook), he struggles with social norms, em