My entry for this contest is an internet legend, which says that on March 12, 2007, in the / b / forum of 4chan, an anonymous user posted a GIF image.

At first glance, strangely, the GIF was not animated. It had the title "I'M_HAPPY.GIF", and showed what appeared to be the drawing of a happy face, only with realistic eyes and mouths.
Those who clicked on it, saw that the smile turned into a grimace, and the eyes took on a furious appearance. The little face then shouted loudly (enough to burst eardrums) and showed horrible images of animals being tortured, raped, victims of Hiroshima, aborted fetuses and mutilated bodies; all blinking rapidly.

After 5 minutes, it showed the words "Have nice day", and the user's computer would automatically close the browser, and then stop working as if a virus had corrupted the hard drive. The people whose computers ended up infected, were found in their homes, skinned and mutilated, with a smiley face painted on the ground next to their corpses.

The origin of this legend is unknown but then we were left wondering if the murders were real as they say? I imagine something happened like the gif that I leave below: