I agree it's not meaningful. The two terms have no intrinsic meaning in themselves and depend on each other for definition.
DOCTOR: "If the Thraskin puts his fingers in his ears, it is polite to shout!" That's an old venusian proverb.
JO: Well, what's Thraskin?
DOCTOR: Thraskin? Oh, it's an archaic word, seldom used since the twenty-fifth dynasty, the modern equivalent is "plinge".
JO: What does plinge mean?
DOCTOR: Oh, for heaven's sake, Jo. I've just told you - it means Thraskin.
DOCTOR: "If the Thraskin puts his fingers in his ears, it is polite to shout!" That's an old venusian proverb.
JO: Well, what's Thraskin?
DOCTOR: Thraskin? Oh, it's an archaic word, seldom used since the twenty-fifth dynasty, the modern equivalent is "plinge".
JO: What does plinge mean?
DOCTOR: Oh, for heaven's sake, Jo. I've just told you - it means Thraskin.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'
