It means to agree with something or someone. When I was in the Marine Corps, we always said this to one another. I had never heard it before, but now I use it all the time.
Something someone said that deserves a definition of it's own. Truly a masterpiece of the english language.
Originally found in the definition of fo' shizzle my nizzle.
Fo' shizzle m- I mean, I concur with you whole heartedly my African American brother.
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.