Faulty, in some unspecified way.
From the PK Dick short story Autofac, where the word 'pizzled' is used to confuse a
robot who keeps delivering unwanted milk. Since there is nothing wrong with the milk, the
robot will not stop delivering it, even though the humans
don'
t want it. But when the humans say that it is 'pizzled', the robot is forced to fill in a compaint form which ultimately results in the downfall of the robot factory system.