Strong coffee or any other caffeine based energy drink used for the sole purpose of staying awake and keeping up in a math class. Not to be confused with Hemingwagra which is what you take to keep up in an English class.
I'm failing this math class because it's so boring I keep falling asleep. I better get me some pi-agra.
"Adam, since you started taking pi-agra before math class, your dAngle is no longer in dysfunction."
Pi-agra allows me to concentrate in math class and keep it up for hours!
WARNING: If increased concentration is greater than or equal to the square root of 16 hours, please consult your instructor.