I don't know how they wrote this with a straight face.
This was a real memo sent out by IBM to its employees in all
seriousness. It went to all field engineers about a computer
peripheral problem. The author of this memo was quite genuine.
The engineers rolled on the floor! Especially note the last
couple of sentences.
'If a mouse fails to operate or should it perform erratically,
it may need a ball replacement. Mouse balls are now
available as FRU (Field Replacement Units). Because of the
delicate nature of this procedure, a replacement of mouse balls
should only be attempted by properly trained personnel. Before
proceeding, determine the type of mouse balls by examining the
underside of the mouse. Domestic balls will be larger and harder
than foreign balls. Ball removal procedures differ depending upon
the manufacturer of the mouse. Foreign balls can be replaced
using the pop off method. Domestic balls are replaced by using
the twist off method.
Mouse balls are not usually static sensitive. However, excessive
handling can result in sudden discharge.
Upon completion of ball replacement, the mouse may be used
immediately. It is recommended that each person have a pair of
spare balls for maintaining optimum customer satisfaction. Any
customer missing his balls should contact the local personnel in
charge of removing and replacing these necessary items.
Please keep in mind that a customer without properly working
balls is an unhappy customer.