Okay, literally any other TOPIC.
The Big Bang Theory Season 10, Episode 16
I'm smart enough. Asking me about a TOPIC
I'm not familiar with doesn't prove anything.
The Big Bang Theory Season 8, Episode 2
I would like to propose a salon TOPIC.
The Big Bang Theory Season 8, Episode 18
But I find that TOPIC irresistible so,
The Big Bang Theory Season 10, Episode 7
Have you noticed Howard can take any TOPIC
and use it to remind you he went to space?
The Big Bang Theory Season 6, Episode 5