In response to the most severe Ebola virus outbreak recorded in human history, the World Health Organization has formally declared the epidemic a "public health emergency of international concern."

Kier Simmons shows off his prototype of a working replica of the Dragon Ball Z scouter device, as made famous by the line "Vegeta, what does the scouter say?"

For every time a crashed site has frustrated you, there's a funny error message to cheer you up.

Should these be considered "pranks," or are these YouTubers just recording themselves being jerks? When does a prank become harassment?