When you get a boner and ejaculate at the same time.
(verb) I duke nukem whenever I drink whiskey and put my wiener in strange places.

(noun) I had a Freudian dream last night where I blew up a submarine. I was informed in said dream, that when one becomes erect and immediately ejaculates, it is referred to as a duke nukem. When I awoke, my boxers were covered in semen. I clearly had experienced a duke nukem.
by zarathustra2011 May 10, 2012
a term used when something is expected to be released (movie, game, etc) but never does, inspired by the actual Duke Nukem that never came out
It's not coming out. I'm having it classified at a Duke Nukem.
by i dont like sand September 09, 2010

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