It concertina-ed into a tunnel of birds, as if it was a bird
caught between parallel mirrors, reflecting infinitely into the distance.
"What are you?" shouted Random.
"We'll come to that in a minute," said the bird. "Just how many, please?"
"Well, you're sort of . . . " Random gestured helplessly off into the
distance.
"I see, still infinite in extend, but at least we're homing in on the
right dimensional matrix. Good. No, the answer is orange and two lemons."
"Lemons?"
"If I have three lemons and three oranges and I lose two oranges and
a lemon what do I have left?"
"Huh?"
"OK, so you think that time flows that way, do you? Interesting. Am
I still infinite?" it asked, ballooning this way and that in space. "Am
I infinite now? How yellow am I?"
Mostly Harmless by Douglas Adams