The "illusion" is that this is just a picture of coffee beans; but it is not. Can you find a man's face among the beans? Some say that if you find the man in 3 seconds or less, the right half of your brain may be more well developed than most.
PS: This is not a trick. A man's face is really hidden among the beans.
Of devout coffee drinkers, about 62 percent of those who are 35 to 49 years of age say they become upset if they don't have a cup of coffee at their regular time. Only 50 percent of those under age 35 become upset.