End of Episode 19, Season 5.
“It’s gone.”
“Well, I’ll be. The Cooper chaos theory just produced a touching moment.” Young Sheldon - Season 5- Episode 19
The Cooper living room, late evening. Sheldon is sitting at his spot at the dining table, meticulously polishing a single peanut with a napkin. Missy storms in, slams her backpack on the floor, and throws herself onto the couch.
“Billy Sparks threw it in the trash. I fished it out.” She pauses. “You’re still weird. But you’re my weird. And nobody gets to trash your peanuts but me.” End of Episode 19, Season 5
“Worse. He wears a clip-on. Says real knots disrupt cervical blood flow.”
“I’m never going back.”
She disappears into the hallway. Sheldon looks at the peanut. Then, just barely, he smiles.