Without using Google (or posting spoilers in the comments!), it is entirely within your ability to solve this koan:
The official Riko once asked Nansen to explain to him the old problem of the goose in the bottle. “If a man puts a gosling into the bottle” he said, “and feeds the gosling through the bottle-neck until it grows and grows and becomes a goose, and then there just is no more room inside the bottle, how can the man get it out without killing the goose, or breaking the bottle?”
You can think about it, but don’t think too hard!