Teens are settling up with cold brews and cake pops after school, according to a report from Cafeteria, an app that pays young people for their brand insights. We know teens love their Strawberry Acai Refreshers, their Caramel Frappuccinos, and their cake pops from Starbucks. But the coffee chain is so deeply integrated into the lives of teens that they don’t just use it to fuel their mornings and as a meetup spot: They also use it as currency.