Every time someone believes the hype behind an apocalyptic theory that will end the world, and the hysteria that ensues. It is an old cumulative tale about a chicken (or a hare in an early version) who believes the world is coming to an end. The phrase "The sky is falling" has passed into the English language as a common idiom indicating a hysterical or mistaken belief that disaster is imminent.
Suffering from Chicken Little Syndrome, Johnny believes that either the Mayans were just lazy, or the world is coming to an end in 2012.
A person who complains or is an asshole to those around them, yet when called out or is met with a retaliation to their behavior, will whine like a little bitch and run away.
Person 1) Man this guy sure is an asshole Person 2) Every time we out him he gets upset
Person 1) What a little bitch chicken
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.