Bush hid the facts!!
This isn't really a tech. trick, but it's an amusing one.
Do it yourself.....
1) Open an empty notepad file
2) Type Bush hid the facts
3) Save it as whatever you want.
4) Close it, and re-open it.
This is what you get.. All hidden!!
Reasons for why this happens:
Bush hid the facts (sometimes also this app can break) is the common name for a bug present in the function IsTextUnicode of Windows NT 3.5 and its successors, which causes a file of text encoded in Windows-1252 or similar encoding to be interpreted by applications that use it (such as Notepad) as if it were UTF-16LE, resulting in mojibake.