The tight-knit groups of academic high-achievers who owe some or all of their accomplishments to illicit use of Adderall (Ritalin). Very common in prestigiousuniversities.
"Know where I can get some oxy?"
"I'd recommend asking one of the ritalin mafia guys. They know the right doctors."
Using the ADD drug ritalin, or adderall to aid oneself in waking up in the morning. Usually taken an hour or so before the desired wake up time. So to be awake and cheery at 6:30a wake up groggy at 5:30a take a ritalin and pass out again. At 6:30 you wake up on your own feeling alert and rested
Friend: "Yo dude how the hell are you so awake and alert at this wee hour of the morning?"
The time period before and during finals when everyone is frantically studying all that shit they didn't pay attention to in class, usually with the help of perscription ADHD medicine. During this time the black market value of such drugs increases as students discover how scarce the drugs have become, with everyone denying their own secret stash as they search for more.