Help-desk guy speaking to a lady user...
Help-desk: Mam, please 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 ? The help-desk boy put down the phone.