420 — 420 is a code kids use to indicate it’s time to get high. Dates back to the 70’s historically but kids will write this all over, get stickers that say “420” and post them. 4/20 has also been designated as “National Pot Smokers Day”
http://en.wikipedia.org/wiki/420_(cannabis_culture)
Skittling — Skittling is a term used to explained when kids take prescription medications and throw all of the different colored pills into a bowl. Once they have a bowl of colors (that looks like skittles candies) all of the kids will take the same color pills at the same time in an effort to obtain a high.
Robo Tripping — Robo Tripping is very similar to skittling. It refers to drinking excessive amounts of cough syrup to get high. The name comes from the popular Robitussin brand of cough syrup.
Choking Game — AKA “Pass-Out,” “Space Monkey,” “Flatliner” and “Blackout.” – A risky tween/teen behavior where the object of the game is asphyxiation. Pressure is applied to restrict oxygen and/or blood flow to the brain of the victim. Two common methods are neck constriction or chest compression. Kids feel as sense of floating, tingling, or a “high.” The practice is usually played by kids ages 7-21 but most concentrated on middle school aged kids. This is not a form of autoerotic sexual behaviors. More information is available at http://chokinggame.net/