Sometimes you think you're watching just another video on YouTube with a funny name, and then BAM! It becomes the funniest thing you've seen all week due to an offscreen surprise. We've posted a few of these videos on their own, but decided to compile all our favorite videos with surprise endings for you. Whether they end with a blooper, the arrival of an uninvited guest, or end up revealing some ridiculous thing going on just out of sight of the camera, these videos each had us going after every play. Just make sure you watch until the end to see the surprise, and vote for your favorite!