
Well, I don't KNOW.
The Big Bang Theory Season 5, Episode 18

And I KNOW you're angry.
Breaking Bad Season 5, Episode 12

So, what does she KNOW? And send.
The Big Bang Theory Season 6, Episode 6

Mmm, and you KNOW
what that means.
The Big Bang Theory Season 7, Episode 20

of that book, you KNOW who
should play Leonard's mother?
The Big Bang Theory Season 5, Episode 13