Firstly, if you don't have Chrome, go and download this: Chrome Browser

Okey, once you have Chrome open, right click anywhere on any page:
Screenshot by Lightshot

Click 'inspect element':
Screenshot by Lightshot

Then click 'console' (You may need to extend the box Screenshot by Lightshot):
Screenshot by Lightshot

Go to this site, and copy all of the text:
javascriptfunction(){function c(){var e=document.createElement("link"e.setAt - Pastebin.com

[Ignore the smileys in the link Just click it anyways]

Paste that text at the bottom of the console, shown here:
Screenshot by Lightshot

Click enter, close the console, and enjoy the ride.

 

Credit 2 torik k ty

 

Just in case you didn't know, you don't need chrome.

 

I was showing it in Chrome, makes it easier to follow

 

lmfao

 

Do the harlem shake

 

gg

 

THIS IS THE BEST THING IVE EVER DONE

 

I remember I used to do this in class last year xD