A Help desk guy speaking to a lady user...

Help desk: Double click on "My Computer".

Lady: I can't see your computer...

Help desk: No... click on "My Computer" on your computer.

Lady: How the hell can I click on your computer from my computer?!

Help desk: There is an icon labelled "My Computer" on your computer... double click on it...

Lady: What the hell is your computer doing on my computer?