When you take an action that produces the exact opposite result of what you thought it would, as a result if not performing due diligence or research.
*Crashes car into religious school*
*Realizes the school was AGAINST the religion you were targeting*
"I see you did your DUH Diligence."
*Realizes the school was AGAINST the religion you were targeting*
"I see you did your DUH Diligence."
by prettyprettymushroomcloud November 16, 2023
by Brooklynn1123 October 28, 2021
Onomatopoeia that evokes the musical flourish that accompanies dramatic climaxes in movies and theatre performances. Used to express an emotional reaction to a sudden change of circumstances or something brought up in conversation, usually surprise or trepidation.
Person A: "The boss wants me to run the department while he's away on holiday."
Person B: "Duh nah nah nah!"
Person A: "I have to get back for an exam tomorrow but they just cancelled my flight!"
Person B: "Duh nah nah nah!"
Person B: "Duh nah nah nah!"
Person A: "I have to get back for an exam tomorrow but they just cancelled my flight!"
Person B: "Duh nah nah nah!"
by ChenBL December 27, 2020
by You’re a duh December 14, 2021
How other people be mean.
Ta duh is the meaning of a family with the last name, mayonnaise. Stating that this person or thing is annoying and rude, like Dr. Witinok.
by Jim Rooster March 28, 2016
by WHatevES1234567890j July 14, 2021