F: *What (note 1) was the last episode *that we watched?
M: *Season 2 episode 4, *so now we should watch the fifth.
F: Alright. I told you you would like this comedy.
M: It's not bad, kind of hilarious. I've got a question, you know, this is Young Shelton, I wonder if there is anything called Middle-aged Shelton or Old Shelton?
F: The grown-up Shelton is in Big Bang. As for the old one,* perhaps it will be on air *in 30 years.
M: Really? I think Young Shelton is much funnier than *he is in Big Bang. I didn't even know what * those people in Big Bang *were talking about. I just couldn't get the jokes.
Note 1: “Which” might be grammatically correct, but usually we would say “what” colloquially