When extended, i clarify. When extended, i punish.

Remove my first, and I am a legendary Justice - R.I.P. Add FUL to the end, and I hope you are, at least when we speak. Remove my second and fourth; read me backwards for a tiny, shack-like place. Remove my first and last, and you may feel like you're in one at times. Read me as a whole, and I’m a synonym for part of the best policy.

It can be accomplished in many ways, with help or alone, sometimes using a shake or a twist. You don’t need any special equipment, but some people use it. It is rhythmic and emotional. Some methods are named after people, while others take the flavor of the area they originated. Anyone can do this, but some are terrible at it, like Elaine.

Summoned by sunlight, I quietly appear. Marks by the devil, some say with fear. I prefer angel kisses, a happier sound, I’m rarely just one, I arrive in a crowd. I grace your nose, your forehead, your cheeks, I deepen in summer, and fade after weeks.

I cannot satisfy hunger or thirst. I am not in your lungs or your blood. I am dismissed and derided. Called foolishness, delusion, and vanity. None of that changes my importance. Without me, you die. Simple as that.