Someone who drives a Scion and has it tricked out.
whoa, look at the TC! she must be a Mad Sciontist
Mad Sciontist: define #2
When someone purchases a Scion and has it tricked out. Typically they spend every last dollar they have keeping the car from going back to the bank
Whoa, did you see Allena’s new Scion TC, it has every option possible… She’s a Mad Sciontist!