Want to trip your friends out and turn the whole computer screen world topsy-turvy?
On April Fools' Day, YouTube pulled an excellent prank that flipped videos upside-down. Well, here's the little trick that makes it possible for you to do the same.
Just go to youtube.com and click on the video you want to watch. Here is the original url for the video in this example:
Now after that last part of the url simply add &flip=1 so it looks like this:
...and voila! - Robert Smith is playing the guitar upside-down!
Standing on your head has never been so much fun!