Stuart: I know it sounds crazy... but Penny was like some kind of, uh, revolutionary guerrilla leader, uh, fighting against this AI government thing that put chips in everyone's neck.
Amy Farrah Fowler: And the chips, they were inserted with magic?
Stuart: N... No, no, that's... that's the next universe. That's a... that's a completely different ball of wax.
Amy Farrah Fowler: Right, sorry. "Different ball of wax."
Stuart: And I know you. I mean, uh, from my universe. But you weren't a psychiatrist, you were... were a neurobiologist.
Amy Farrah Fowler: Well, good for me. And this all happened before or after the apocalypse?
Stuart: Oh, before. After civilization collapsed, there wasn't a big demand for neurobiologists. Rat farmers, sure, you know? [chuckles] People gotta eat.
Amy Farrah Fowler: Uh-huh.