I was right:
The man walks down a corridor. He opens door 12. There is a man at a desk.
Mr Barnard (shouting) What do you want?
Man Well I was told outside ...
Mr Barnard Don't give me that you snotty-faced heap of parrot droppings!
Man What!
Mr Barnard Shut your festering gob you tit! Your type makes me puke! You vacuous toffee-nosed malodorous pervert!
Man Look! I came here for an argument.
Mr Barnard (calmly) Oh! I'm sorry, this is abuse.
Man Oh I see, that explains it.
Mr Barnard No, you want room 12A next door.
from:
http://www.ibras.dk/montypython/justthewords.h tm