Catchphrase popularized on 4Chan, which spread to other various forums online, signifies that the content of a thread isn't desired or liked that much
Acquired from a
bootleg camcorder Hong Kong subtitling of the Chinese dub of Star Wars Episode III, in which
Darth Vader's howl of 'NOOOOOO!' scream is translated to Chinese and then back to English as 'Do not want'