Big Bang Theory -

Penny puts a sleeping toddler in a playpen.

Sheldon’s blood runs cold.

Sheldon doesn’t correct her. INT. CALTECH ROOFTOP - NIGHT (HOUR 71) big bang theory

LEONARD: "…Lizard, Spock?"

PENNY: "What are you two thinking about?" Penny puts a sleeping toddler in a playpen

LEONARD: "I think you’ve got the wrong apartment, man."

SHELDON: "Sentiment is just neurochemistry, Leonard. And neurochemistry obeys laws." man." SHELDON: "Sentiment is just neurochemistry

Sheldon, desperate, slams the emergency override backward .

Leonard blinks. Uncomfortable.

AMY: "You’re doing it again."