When playing in extreme sports or running. Or fucking for so long and hard that you begin to perspire on your derf. (space between your balls and asshole.)
by tit fucker October 21, 2007
by sezredtertert76 April 9, 2010
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
When one of your friends attempts to become the incredible hulk when drunk and no one will give them more alcohol.
by Steve_42 January 22, 2009
by tube June 6, 2006
(Definition 1): The extra skin that allows your balls to swing out, so you don't shit on them. (Although usually covered in hair, there have been reports of hairless and albino derf spottings in the wild);
(Definition 2): sweaty, stinky, beneath you, Flappy Fringered Bassist
(Definition 2): sweaty, stinky, beneath you, Flappy Fringered Bassist
(Definition 1): This Guy I know was in a bad car accident and broke his derf. Doctor told him it might never be the same.
(Definition 2): That guy they caught spanking it in the Mens room is such a Derf.
(Definition 2): That guy they caught spanking it in the Mens room is such a Derf.
by Jaysmoka April 15, 2007
Something that is Dumb,stupid, boring, growing tired of. could be shortened to just Berf.
*** note ** this made #1 on the "reader slanguage" in FHM magazine sent in by myself (march 2006)
*** note ** this made #1 on the "reader slanguage" in FHM magazine sent in by myself (march 2006)
-Man that movie was Berf-Derf , I walked out the theater.
-If someone just told you a supid joke: you say " Berf-derf ".
- Getting tired or bored at a joint or club?? just say "man this is Berf-derf , lets roll".
-If someone just told you a supid joke: you say " Berf-derf ".
- Getting tired or bored at a joint or club?? just say "man this is Berf-derf , lets roll".
by CHAD HUGHES March 27, 2007