Knowing that he could hop pretty high, zoo officials put up a ten foot high fence, but the next morning the kangaroo was out again, bounding merrily around the grounds.
So the zoo officials raised the height of the fence to twenty feet, but once again the kangaroo was found the next morning hopping around the zoo.
This continued, night after night, until the fence was sixty feet high.
Finally the camel in the next enclosure asked the kangaroo , "How high do you think they`ll go?`
The kangaroo replied, `Probably a hundred feet
Spoiler:
