
Well, let's change the SUBJECT.
No more mentions of you-know-who.
The Big Bang Theory Season 9, Episode 10

Oh, hey, on a related SUBJECT...
The Big Bang Theory Season 3, Episode 6

You know, l just think maybe
we could change the SUBJECT?
Breaking Bad Season 4, Episode 5

Although how we got
onto the SUBJECT of you is baffling.
The Big Bang Theory Season 3, Episode 11

Subject has arrived.
The Big Bang Theory Season 3, Episode 10