This porn was brought to you by the letters H-A-C-K. Sesame Street had some unwelcome visitors Sunday, when its YouTube channel was hacked. In place of wholesome and cute videos of muppets were videos depicting explicit sex. The channel was taken down immediately and then restored Monday. Sesame street apologized in a note on YouTube, saying that the video clips of “the fuzzy, feathered, and googly-eyed friends you remember from childhood" were available again. Two YouTube users have been linked to the prank, but the perpetrator has not been identified.