An individual born between 1982-2004, classed as a millennial - but is a bit inept and therefore can be considered a "retard" - this word is the two combined into one.
Oi look at that idiot, can't even tie a shoelace, what a millennitard.
The ignorant and arrogant generation of the human race born towards the end of the 1980s up to the early 2000s. They blame everything on the previous generation, they think they are amazing at everything, they think "the man" is the reason for their economic disparity. They are the anthesis of "free-thinking," they make copies of original works of art and then claim they've done it better than the original. They have no grasp on recent or distant history so they are condemned to make the same mistakes as previous generations.
I just saw two millennitards wearing onesie animal suits butchering Crowded House's Don't Dream It's Over.
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.