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1.
Don't Fuck It Up
ok guys, NASA needs this part to be Top secret with no Flaws, DFIU
автор: Security man of the century 8 мая 2011
 
2.
Dont Fuck It Up
before embarking on any important task or activity a chant of DFIU (pronounced dee phi you) would usually be heard among participants
автор: a_girl_called_toby 19 апреля 2009