"That's a good question."
The spin doctor says.
It means, I don't know,
but I don't want
you to know, I don't know.
That's a good question
buys me enough time
for a long wordy
sentence or so
that begs the question
and leaves it unanswered,
but wont let you know
I don't know.
Ron flowers 2001
An interesting exposé of the first answer to the question.