Focus

Focus
Focus is a flash game made by Wally Bartus on Albinoblacksheep. It makes you focus on this black and white picture, making you believe it will make you see weird. However, after about 10 seconds, a picture of an obese woman showing her rear end appears along with a fart sound. Then, some text appears saying "Gotcha, didn't I? Hahaha!"

Link
NOTE : The following animation contains a screamer.
 * albinoblacksheep.com/flash/focus