Sheldon is furious with his mom for keeping his CalTech acceptance letter from him. Watch more Young Sheldon on TBS. Season 3, Episode 21 #YoungSheldon #SheldonCooper #MaryCooper #TBS SUBSCRIBE: bit.ly/TBSSub Download the TBS App: bit.ly/1qBbkMW About Young Sheldon: It’s 1989 and 9-year-old Sheldon Cooper has skipped four grades to start high school along with his less-intellectual older brother. As he struggles to be understood by his family, classmates and neighbors, his mother arms him with the best tool she can come up with: reminding bullies his dad is the football coach and his brother is on the team. His twin sister doesn’t share his exceptional mind, but she has a much clearer vision of what life has in store for the young genius. About TBS: The home of Friends, Young Sheldon, The Big Bang Theory, American Dad, AEW, The Cube, Miracle Workers, Friday Night Vibes, Wipeout, movies and more. Get more TBS: Full Episodes: TBS.com/shows YouTube: htt...