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 prestigious universities.
"Know where I can get some oxy?"
"I'd recommend asking one of the ritalinmafia guys. They know the right doctors."
Using the ADD drugritalin, 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?"