This is a very little known secret, but there is a special character that causes browsers to reverse the text it encounters. This feature exists so that right-to-left languages can be displayed, but it can be applied to languages like English!. This character is displayed by typing ‮ at the beginning of a sentence block. Here is a sample:
Source:
‮Wow, is it all backwards?
Comes out as:
‮Wow, is it all backwards?
Pretty neat huh? To see this in action, visit Google Loco with Firefox. Google Loco will use JavaScript to add this special character as the first character of the search term box. It is mostly invisible in regular browsers, although it can cause a strange square or space to appear at times.