Yes, Minister, Series Three (1982)

Hacker:
Get Humphrey to come back here at once.

Bernard:
Yes, Minister. [Picks up phone] The Minister wonders if Sir Humphrey could spare time for a meeting sometime in the next few days.

Hacker:
At once.

Bernard:
In fact, sometime today is really...

Hacker:
At once!

Bernard:
...Sometime during the next 60 seconds. [hangs up] He's coming round now.

Hacker:
Why? Did he faint?

Bernard:
No, he's just, you know...

[they both start giggling]

Hacker:
This is serious, Bernard.

Bernard:
Yes, I know.

Hacker:
This is no laughing matter.

Bernard:
No, certainly not.

Hacker:
The question is, how am I going to deal with it?

Bernard:
In my opinion...

Hacker:
The question was purely rhetorical, Bernard.