by yeah3xyeah3xyeah3x March 28, 2011

One stupid ass fucked up bitch, who doesnt know what she wants, lies all the time, tells you she likes you... but then sometimes wants to get on other people...
by Derf Hater July 12, 2006

A derf is another word for the unwanted. the person no one wants/need. the loner. the suspected pshyco killer. it can also be another word for tool, widely known as somebody no one needs (annoying). an extremely BIG insult.
by CoUnTrYwOrLd July 7, 2011

by yunglivin September 1, 2019

by Derfingyurrrmom October 30, 2019

by derfsurfer May 1, 2009
