I had this guy come up to me at school the other day with a memory stick in his hand. He asked me to delete a file on the stick and copy some others. So, I connect the stick and open the contents. He pointed to the file that he wanted to have deleted. I select the file and ask him,

“Do you want me to delete THIS file?“

“Yes”, he said.

“Are you SURE you want me to delete THIS file?”, I asked him again just to be sure.

“YES!”

So, I went on to delete the file.
The file disappeared.

And the next thing he said was,

“Oh, no-no, not THIS file!”

…

Go figure.

PS. I should probably mention that nowhere in the above text does it suggest that this post was worth reading. The same applies to the postscript :)