Zoeken, also known as Find the 3 differences between these 2 pictures, is a Dutch prank. Zoeken is a Dutch word for Search.
It asks you to find the three differences between two identical pictures of some hills and a river. After a short while, a picture of the character 'Amy Peterson' from the movie Fright Night suddenly appears, zooming in and out a few times over a roar, before heading to the end portion with a picture of SpongeBob SquarePants and the sound of SpongeBob laughing.
NOTE: The following animation contains a screamer.
NOTE: This is a scary picture.