An insult aimed at someone with less than average IQ, coolness factor, or Bodily Odor (in this case, more than average). Can also be used in place of a forgotten name.
Hey monkey tits, take a shower! You smell like a bag of smashed assholes.
Hey.... uh... Monkey Tits, get me a fucking beer before I hit you with a jizz rocket.
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.