
Sheldon: Why are you crying?
Penny: Because I’m stupid.
Sheldon: Well, that’s no reason to cry. One cries because one is sad. For example, I cry because others are stupid and it makes me sad.
The Big Bang Theory S03E10

Sheldon: Why are you crying?
Penny: Because I’m stupid.
Sheldon: Well, that’s no reason to cry. One cries because one is sad. For example, I cry because others are stupid and it makes me sad.
The Big Bang Theory S03E10