"A skinny cat stood for hours waiting for the mouse to walk out from behind the hole, so he could nab him. He was having little success.
A fat cat walked by, inquired about the nature of the difficulty, and volunteered to show the skinny cat the ropes.
First thing, he had the skinny cat move out of the way where he could not be seen and did likewise himself. Next, he barked, "Woof, woof."
The mouse, thinking a dog had scared the cat away, and it was safe, ventured out only to be nabbed and devoured by the fat cat.
"You see," explained the fat cat, "it pays to be bilingual."