The act of being calm, silent, and serious. Those who choose to be stoic feel every emotion, yet show none. Never try to manipulate a stoic, because they always know what is going on. Some of the smartest people in the world are stoic. They keep their thoughts and feelings to themselves.
If silence is power, then stoicism is invincibility.
Someone who does not give a shit about the stupid things in this world that most people care so much about. Stoics do have emotions, but only for the things in this world that really matter. They are the most real people alive.
Group of kids are sitting on a porch. Stoic walks by.
Kid - "Hey man, yur a fuckin faggot an you suck cock!"
In chemistry: The study of, and all things pertaining to, Satan himself.
..Also known as the ridiculous, unfathomably stupid topic in chemistry. The curious thing is that stoichiometry, being a science, actually involves no science at all, only math.
Class, today we will be learning about stoichiometry. In order to prepare I must mentally sacrifice all of you to Satan.