An exclamation you make when you realize something you should have known all along, or when the person you're with has a startling revelation about something obvious.
Bob: "Wow! I never knew that donuts were so bad for you!"
Sally: "Duh 101"
Francine: "I should have known he was married! Duh 101!"
Sally: "Duh 101"
Francine: "I should have known he was married! Duh 101!"
by zandwich October 05, 2010
A quip uttered after a stupid quido from the New York Metro area (long Island, Brooklyn, Etc...) says just about anything about anything. Since the Quido is typicaly very stupid and non-sensible "fuckin-Duh" pretty much somes up his/her statement which is often preceded by "fuck" or "fucking (fuckin)".
"Uhhhh duh yo, yeah I could fuckin kick his ass even dough I am 5'3" tall, fat and stupid with a fake tan." Anyone listening who is sick of looking at stupid Italian (southern hertitage) quidos simply say or think "A fuckin Duh!"
by willkillyou August 01, 2009
When one makes a mistake. When one has a dumb moment and forgets what their saying. When one messes up on something.
by UrbanMage February 16, 2017
by gabo.goldberg October 04, 2020
by Matt Clifford January 13, 2009
Egads! I completely forgot to turn off the circuit breaker before sticking my penis across those bare wires, duh football!
by Dentar June 23, 2006
by Big Hungry avalong April 22, 2009