a person who has had a lapse in memory and therefore realises his/her mistake and proclaims the phrase "oh dedder" originated from retards who couldnt speak properly ie "da da"

simon u missed the turn off! oh dedder!

dedder by sam March 29, 2004

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Deader than a doornail

When something is so dead as to not have any life left in it , as not to even be able to be revived .

I don't think I'm gonna be able to get your car started , that battery is deader than a doornail !

Deader than a doornail by dragonboy8586 June 22, 2020

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dedederail

Derailing a fourm thread with puns starting in Dedede.
Originated in the Awkward Zombie Fourms

These puns are DEDEDElightful

You just dedederailed the thread

dedederail by pikscast October 28, 2014

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derder

Noun. Cylindrical light-stock cardboard tube used to wrap toilet paper and paper towels, among myriad other paper and card stock products. Once the paper is exhausted and it is no longer used in its original capacity, it is used to trumpet one's voice around the room or venue in similar fashion to a megaphone.

My dad sounds so ridiculous when he uses that derder to make a duck call.

derder by Suwannee Redhead September 13, 2005

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