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DFU (Internet slang)
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In [[Internet slang]], a '''DFU''', or '''Dumb Fucking User''', is an [[acronym]] used by IT personnel to describe errors by the end-user related to misuse or poor understanding of the basic principles of computer operation. It can be used in expressions such as "It must be a DFU error", and is also conveniently used to openly mock the end-user if a fellow IT support staff member is present on the premises ("Sir/Madam, this is a very bad case of DFU error you have now").

The acronym DFU may be used by folks like the [[BOFH]].

== See also ==
* [[ID-Ten-T Error]]
* [[Luser]]
* [[LART]]
* [[Pebkac]]

[[Category:Internet slang]]