Monty Python's Flying Circus1969

Man at Not at All Naughty Chemist's:
[to the camera] Sorry about this. Normally we try and avoid these little pauses. Longueurs. Only dramatically he's gone down to the basement, you see. 'Course, there isn't really a basement, but he just goes off and we pretend. Actually what happens is he just goes off there, off camera, and just waits there so it looks as though he's gone down to the basement. Actually, I think he's rather overdoing it.

[trying to cue the chemist in]

Man at Not at All Naughty Chemist's:
Ah!

[a camera focuses on the chemist; he jumps and rushes back onto the set]