A phrase that has been popularized by the critically-acclaimed TV series "24," who's main character, Jack Bauer (Kiefer Sutherland), uses the phrase as his trademark. A vulgar phrase a person says when they are angry or frustrated. Also spelled "damnit" or "dammit."
(Based off of a scene from 24's Season/Day 6-Episode 2)
Jack Bauer: Mr. President, you don't want to kill Assad! Abu Fayed is the one behind these attacks!
President Wayne Palmer: I'm sorry, Jack, but our current evidence suggests that this is all the doing of Hamri Al-Assad. You do not have any conclusive evidence that Fayed is behind this.
Jack Bauer: Sir, I just escaped from Fayed! He told me that and I refused to die for nothing so I broke free to save Assad!
President Wayne Palmer: I'm sorry, Jack. Truly I am.
Jack Bauer: Damn it!