"I think I might slip on the ice", Janet said. "Well duh!", Emily exclaimed.
by Definitions@123 January 7, 2022
explained properly by my 3 year old niece to her father.
So the other day Josephine said, "Duh Dad."

I asked her what "Duh" meant and she said that "Duh is when we have an argument and then I say Duh...and then I win the argument."
She's a genius.
by Smile4rhonda June 8, 2010
A word someone says when they're being condescending, even if the situation does not call for it.
Friend: I took a trip to nostalgia land
D-bag: Look on the bright side, it means more people can enjoy old anime now.
Friend: Uhh, why would I look on the bright side even though my comment never implied something negative.
D-bag: Because you need to experience the dark side to fully value the bright side.. DUH!!!
Friend: Uhh, I still don't see how any of that is relevant to my comment, you make zero sense.
D-bag: No, it means you have no common sense, DUH!!! Go back to school retard.
by John Rackham December 6, 2021
An expression that someone says when another person says something obvious or dumb.
Person 1: Hey look I can see myself in the mirror!
Person 2: duh.
by Krazy Boi December 25, 2018
The sound a retard makes.

1. Used to indicate that something is so obvious that even a retard could figure it out.

2. Shorthand for, “How did I not think of that? I am such an idiot!”
Duh! What was I thinking?
by Maldoven July 7, 2011