Term used to describe something that is of no use whatsoever - usually using during an attempt to install a Microsoft product on a Windows OS.
Arg, that Bill Gates, he's about as much use as a Sack of Horse Piss.
by Stationmiek October 10, 2006
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Insult - derogatory term for someone who is offensive to one's senses.

Often abbreviated to 'Sack of Unwanted'
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