Something that is so wrong, that not even 'what the fuck'/wtf can describe it. It is said to be "not suitable for 'what the fuck'."
guy 1 - "Dude, you have to read this hentai clopfic. It has Spitfire in it"

guy 2 - "What? No! That's... it's nsfwtf. Just no. Ew..."
by Zerophyte January 20, 2013
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