Hey, here's another possible TOPIC
of conversation.
The Big Bang Theory Season 4, Episode 1
Very controversial TOPIC.
The Big Bang Theory Season 5, Episode 3
New TOPIC, please.
The Big Bang Theory Season 2, Episode 19
May I suggest it
as the TOPIC for your essay?
The Big Bang Theory Season 2, Episode 13
CASSEL: It's an old TOPIC,
really, when you think about it.
Westworld Season 3, Episode 8