Top Definition
A new number that will be made globalized and reprinted into every dictionary, schoolbook, printed onto every calculator, and everywhere else that contains numbers, as of June 27th 2063. It is between 5 and 6 and is a combination fo both. It has the top of a 5 and the bottom of a six.
One, two, three, four, five, derf, six ...
#derf #numbers #worldwide #new #unique
di mizzlefftie012 15 luglio 2011
The face a dog makes when he or she tilts his or her head and looks inquisitive or confused.
I threw the ball and Rover just looked at me like, "derf"?
#duh #flurb #huh #srsly #dibba
di smrtpnts 04 dicembre 2011
a slang term for dry humping. Involves sexual contact through clothes
Did you get way derfing her last night.
#derfing #derf #dry humping #levi loving #durf #durfing
di derfsurfer 30 aprile 2009
fred, spelled backwards
yo derf, did you do your homework?
#fred #derf #homework #did #you
di sakawakag 06 maggio 2010
Noun:
Someone who is an idiot, annoying person, jerk, etc.

Verb:
The act of doing something stupid, lame or annoying.

Adjective:
Something that is rather lame, tedious, annoying, uncool, bad, etc.
Schmitty: That Shane guy is such a derf.
Joe: Yeah, he really derfed up that photo.
Cameron: It was such a derfy thing to do.
Brodie: Derfalicious indeed.
#fred #idiot #stupid #annoying #lame #gay #derfalicious #derfed #derfy #derfatron #derfalicious films
di camblyth 20 giugno 2011
the act of gettin fucked up, or describing that someone is fucked up or got fucked up
im tryna to get derfed tonight

did u see that nigga fall? he got derfed.

damn u lost 10-0, you got derfed
#derf #fucked #drunk #hurt #ass
di DerfyMcDerf 21 aprile 2009
1. To get a stamp on your completed homework.
2. To act crazy and/or insane while teaching or just talking in general.
3. To yell at one's smart board.
4. To flick off one's class.

5. To stand on a desk to feel if the air is working.
6. To teach "shit"
7. To throw markers at ghetto kids.
Person A: "Yes I derfed my homework!"
Person B: "Ugh, lucky, I skipped one problem."

Teacher: "You guys forgot your calculators?!!!!" "YOU'RE ALL LOSERS!!!!!!"

Teacher: (to smart board) "WHY ISN'T THIS THING WORKING?!"

Students: (to teacher): "Happy Birthday!"
Teacher: *flicks off class and walks out*
#math #teacher #derflinger #crazy #nuts
di calculusstudent 23 novembre 2012
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