шукати будь-яке слово, наприклад blumpkin:
 
1.
Don't Fuck It Up
ok guys, NASA needs this part to be Top secret with no Flaws, DFIU
додав Security man of the century 8 Травень 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
додав a_girl_called_toby 19 Квітень 2009