(nervous CHUCKLE)
The Big Bang Theory Season 5, Episode 23
(BOTH CHUCKLE)
The Big Bang Theory Season 4, Episode 2
- What makes you CHUCKLE, Leonard?
- Um, recently? Not much.
The Big Bang Theory Season 4, Episode 5
[BOTH CHUCKLE]
Breaking Bad Season 2, Episode 5
(LEONARD AND PENNY CHUCKLE)
The Big Bang Theory Season 10, Episode 9