1. A literal dinner consisting of duck, usually as the main course.
2. Military slang for dishonorable discharge, which in the United States is usually reserved for the worst offenses under the UCMJ, such as fraud, desertion, espionage, SA, treason, and murder.
1. Yeah we went out for duck dinner, not great, not terrible.
2. Sgt. Emerson got a duck dinner for killing that guy.
While our lifespan is the number of years we will live, our healthspan is the number of healthy years we will have and our sexspan is is the number of years we will continue to be healthy enough to continue having an active sex life.
A lighthearted reaction upon receiving disappointing news of some sort. Usually something that isn't a particularly a big deal, esp. when it primarily affects someone else - sort of a mild schadenfreude. Sometimes doubled or tripled, and possibly said in a sing-songy voice for added comedic effect to imitate a muted trumpet, which is how the meme originated.