Dude!" one boy grabbed his friend's hand. "I'm rolling face right now!" His friend nodded and swayed into him, putting an arm around the first boy's shoulder. "Me too, man."
The two were shirtless and sweaty, covered in glitter and donning glow stick necklaces. Their attention turned to the stage where Pretty Lights, the aptly named electronic--music act, ended the packed Popped! Festival with explosive visualizations and ground--shaking electro--beats. 15 or so Penn students surrounded the boys.