Literally translated to "Drunk as fuck"

The suffix is not necessary in the phrase, but is added for ease of speech.
Dude, I was hella daffed last night
by Milktastic November 16, 2013
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A dumb idiot who thinks that kiwi is a boy when she literally said "shes a boy omg".
Daf knee is a dumb person ok URBAN SO LET ME SUBMIT THIS IDIOT
by Someone that knows stuff September 08, 2020
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