1. a shortened term of the colloquialism "what the fuck".
2. used in several popblogs such as dafuq.biz and dafuq-posts.tumblr.com to indicate comedic or bizarre content.
3. An internet meme caption attached to images to indicate the image is comedic or bizarre to societal norms. Commonly seen on popblog icanhascheezburger.com.
what dafuq is this?
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