KETTLE
Device designed to heat up water, whistle just too quietly for you
to hear when it's finished, boil dry, explode and burn your house
down.
-- Daniel Bowen's TOXIC CUSTARPEDIA
COMPUTER
An electronic device designed to make you rip your hair out. The
principles of a computer are very simple. You give the computer
some data as input, it messes, mixes, scrambles and screws up the
data until it is nonsensical and unrecognisable, and then it spits
it out the other end as output....