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

As in financial due diligence, in an intestinal due diligence exercise, when you see daylight you have gone too far
by Wakahare September 11, 2022
