Interjection. When someone does something stupid, "der-de-der" is the appropriate respone to acknowledge said stupidity.

Verb, transitive. To have someone call you out with an interjection of "der de der"
Boy, did Emily say something stupid. Der de der!

Ha, ha.. Emily der de dered you!
by MrMo March 28, 2007
Get the der de der mug.
a phrase made famous by a carlos mencia, referring to an act of stupidity made my a person.
I may have cerebral palsy, but i'm no der der derr.
by Nuke Broadcast November 28, 2005
Get the der der derr mug.
The best word ever, bar none next to Nyerp- See Nyerp
"Those cheetoes are made of fake cheese.. DEEEERRRR!"
by Devious D April 29, 2003
Get the Der mug.
a term used to classify people such a tony deerrrman, who have cankles, a speach inpediment, gay tendencies, and an extremely small weiner.
by homestar rules April 30, 2003
Get the Der mug.
Slang mainly used by snowboarders to refer to the light fluffy "powder" snow. Normally starts with an aposterphy ('Der). Some call itpow
Dude, lets go surf the 'Der
by BiG nELLs January 24, 2005
Get the Der mug.
a word randomly used in place of words such as umm, ugh, uh. can be multi purposed though. also used in place of no shit, duh, and a sarcastic really.
Der, I need some weiner
by Jeska February 15, 2004
Get the Der mug.