: Sheldon gets a lesson in engineering from a teacher.

Played by Annie Potts, Meemaw is Sheldon's rebellious, gambling-loving, and fiercely independent grandmother. She lives across the street and serves as a confidante for both Sheldon and Missy, constantly offering a buffer between them and Mary's strict parenting. 📺 Cultural Impact and Legacy

: Sheldon challenges a NASA scientist, establishing his hyper-competitive nature.