The art of doing what one deems "chill". The definition may vary from person to person but the general idea is for a person t reach an ideal level of satisfaction in all areas of life. Unlike other ways of living, chillinism does not require a person to reach any pre-set goals or be an active member in society. You achieve chilinism when you see fit. Not a soul on earth can tell you otherwise. It's funny how hard people try when they know that an inevitable end awaits them. Chillinsim strictly believes in making ones time alive as "utopian-like" as possible.
The purpose of practicing can simply be deduced to: inflicting as little possible anxiety in life.
"I'm very tired today, but I have class at 9 (what do I REALLY want to do to make myself happy. A: Wake up go to class and not fall behind. B: stay in bed wake up at 2 and feel rested, although i am now a days behind on work."
The answer is literally, whateverwill please you in the long run. Chillinism is an art similar to meditation, but requires effort only you can measure.
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.