
Now, hold on.
If she is dating an American...
The Big Bang Theory Season 4, Episode 20

Hey, it's not my fault if American women
project their fantasies
The Big Bang Theory Season 9, Episode 14

Oh, look, it's the Scientific American
that covered the paper Leonard and I wrote.
The Big Bang Theory Season 8, Episode 18

American woman
The Big Bang Theory Season 3, Episode 12

Am I an American hero?
The Big Bang Theory Season 9, Episode 23