A traveler lay down to rest by a tree, not suspecting it was the Kalpataru tree that fulfills wishes.
As the man was tired, he thought how nice it would be to have a bed. A bed appeared!
Then he thought how nice it would be to have food. Done!
A woman to rub his feet. Done!
As he relaxed, he thought to himself, "I was foolish to have been afraid to make this journey, fearing tigers as I did."
Just as soon as he thought of a tiger, a tiger appeared, and it attacked the traveler and killed him.
Inspired by: Tales and Parables of Sri Ramakrishna
Notes: This is story 16 in the book. You can read more about the Kalpataru at Wikipedia.