"Zen!" shouts the forest. "Zen!" screams the tree. "Zen!" yells the leaf. But the stupid aphid on the leaf can only reply, "Huh?" This is why koans were invented. Do you understand?
The koan: "Eshun's Departure"
When Eshun, the Zen nun, was past sixty and about to leave this world, she asked some monks to pile up wood in the yard. Seating herself firmly in the center of the funeral pyre, she had it set fire around the edges.
"O nun!" shouted one monk, "is it hot in there?"
"Such a matter would concern only a stupid person like yourself," answered Eshun.
The flames arose, and she passed away.
The enlightenment: She sure was a bitch. Right up to the very end.
This has been "Zen Koans Explained." The devils lick your face.