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.
Duerden is the endosperm of life!!! When you have a moment in your life and you realize that that moment was the reason you were born that is a Duerden!
Natasha: Wow that Ice Cream is life changing!!!
Krista: Thats what we call a Duerden!
Natasha: Wow i just had a Duerden ice cream!!!!!