Having a taint fetish. Will ignore the meat and taters to get to that sweet stuff in the tweener.
I was looking for a little road head, but she's a derf pilot....couldn't get shit.
by greenmonstahmsn.com April 29, 2008
Get the derf pilot mug.
Joseph Nixon (college laxer) known as the derf king, due to his addiction to zipper sparking.
Guy 1: Dude did you see the derf king hit top cheese that btb?
Guy 2: yeah, he's definitely getting some levi lovin' tonight!
by Abebe Kebede October 15, 2012
Get the Derf King mug.
1. When the blame for something seems to fail to find a target, blame it on Derf MacGuergan.

2. When an odd situation arises, and you can think of nothing else to say, use this name to show your discontent.
1. "Uhhh I don't know... Must been Derf MacGeurgan."

2. girl: "It happens to a lot of guys."
guy: "Derf MacGuergan!"
by A. King. January 17, 2005
Get the Derf MacGuergan mug.
The act of dry humping with oscillations occurring rhythmically taking the form of the wigglings of a dolphin out of water.
Dude are you taking that Provo hair school chick out again? Yeah dude, if I play my cards right we’ll be dolphin derfing hard tonight.
by Mondo Johnson April 17, 2019
Get the Dolphin Derfing mug.
The reverse of the name "Fred". Commonly used by people who are either trying to be silly, those who think that it's a cool name and didn't like being labeled a "Fred", and those who truly think that it's a great pseudonym and no one will ever figure it out.
Overheard at a trekkie convention:

Fred: "Dude, I'm so awesome, I'm gonna reverse my name and call myself Derf."
Clueless friend: "Dude, that's awesome!!!"
by Octoboi June 27, 2007
Get the derf mug.
A derf queen is one who brings their partner to an orgasm while derfing.
I was derfing with Macy, and I came in my pants. She is a derf queen
by Ur mom gay 6969 September 12, 2019
Get the derf queen mug.
A necessarily late night quest to the closest/farthest 7-11. At least 3 of the four derf meisters must be involved.

For every extra 7-11 hit up, a prefix must be added, i.e. double, triple, double-double, etc.
Douchebag: Wait, what's a derf run?
Derfmeister: WHAT'S A DERF RUN? Why, it's the most wonderful magical thing of all. And it only happens once a year, every week!

by kynitt February 16, 2009
Get the Derf Run mug.