Oh, hey, on a related SUBJECT...
The Big Bang Theory Season 3, Episode 6
I know it's
a sensitive SUBJECT,
The Big Bang Theory Season 7, Episode 17
Can we please change the SUBJECT?
The Big Bang Theory Season 8, Episode 7
You really think it's helpful
to change the SUBJECT, Wyatt?
The Big Bang Theory Season 10, Episode 1
If I may abruptly change the SUBJECT,
did you and Penny finally...? You know.
The Big Bang Theory Season 3, Episode 1