From The Monty Python Scrapbook of Brian of Nazareth (the half containing material that was never used in the movie):
SOLLY: What do you mean, the Holy Ghost?
SARAH: I said, the Holy Ghost done it.
SOLLY: He got you up the gut, the Holy Ghost did?
SARAH: Yeah.
SOLLY: You expect me to believe that the Holy Ghost took a night off from Heaven, came down to number 42, Sheep Way, and shacked up with you.
SARAH: Yeah.
SOLLY: Let me get this right – the Spiritual ruler of the entire Universe feeling a touch randy and in need of a bit of the other, manifests himself, comes down and nips into bed with you.
SARAH: Yeah.
SOLLY: Nice one. I don’t get a bit of nookie out of you for two years and next thing your having knee tremblers with a bloody archangel.
It goes on like that for some time . . . Finally:
SARAH: He was ever so nice. He said I could call him Brian.
SOLLY: Brian.
SARAH: Yes.
SOLLY: Brian the Holy Ghost.
SARAH: Yes.
SOLLY: And do you recollect throughout two thousand years of scriptures the Holy Ghost ever being referred to previously as Brian.
SARAH: Erm no.
SOLLY: So it never crossed your mind that this smutty seraphim, this rampant genie with his pants round his ankles, might perhaps not be an angel of the most high in rut but some quite ordinary mortal with a gift of the gab and a penchant for banging underage briffit.
SARAH: I’ve never done it before.
SOLLY: I’m afraid my dear you’ve fallen for a very old line.
[PAUSE]
SARAH: Do you want me to show you what he did?
SOLLY: What?
SARAH: Do you want me to show you what he taught me?
SOLLY: What all the way? Bareback?
SARAH: I can’t get any more pregnant, can I?
SOLLY: No.
SARAH: Somebody’s got to be second.
SOLLY: Yeah.
SARAH: It’s ever so nice.
SOLLY: All right.
SARAH: Between you and me, I never fancied him that much.
SOLLY: No?
SARAH: No, it wasn’t very big.
SOLLY: That’s not supposed to count.
SARAH: I know. But it helps.