I've search the longest video on YouTube, and the record goes to this SUPER BORING video of clock ticking. Even though it only shows 3:51 (that's mean three minutes and fifty one second, for you who don't understand time!) on the screen, but actually it played for the amazing span of 42 hours!!! After the usual SHARE and REPLAY screen, you can see the time still ticking, and if you tried to download this video, you will spend HOURS just to watch the boring scene of black! Si... I better not to add download link because, of course, who dare to download this video?