
I speak a little Russian.
The Big Bang Theory Season 12, Episode 20

As long as it doesn't originate
in a Russian man's colon.
The Big Bang Theory Season 8, Episode 22

Haven't you ever been told
how beautiful you are in flawless Russian?
The Big Bang Theory Season 1, Episode 2

Because he fights
a Russian.
The Big Bang Theory Season 12, Episode 10

That would mean that
the Russian paper was right...
The Big Bang Theory Season 12, Episode 10