The Big Bang Theory [01/08/2015] - "The Space Probe Disintegration"

Sheldon: There were plenty of ways to pass the time before smartphones were invented.

Leonard: That's true.

Sheldon: I'll look them up... Oh, son of a biscuit!



Sheldon and Leonard had quite a talk. Sheldon is going through a lot of changes but I'm glad to see they are moving the character forward.