Of all the ridiculous things to come from the invention of the internet, Rickrolling has got to be one of my favourites. It's where you take a video like this one of two kittens playing with a puppy and replace it with this:
And hilarity ensues.
(see what I did there?)
My favourite example of Rickrolling happened on April 1, 2008, when all the videos on YouTube were replaced with the Rick Astley video.
In honour of Rick Astley and his contribution to the internet, here is another video: