If Los Angeles is a woman reclining billboard model with collagen-puffed lips and silicone-inflated breasts, a woman in a magenta convertible with heart-shaped sunglasses and cotton candy hair; if Los Angeles is this woman, then the San Fernando Valley is her teenybopper sister. The teenybopper sister snaps bug stretchy pink bubbles over her tongue and checks her lipgloss in the rearview mirror, . . . Teeny plays the radio too loud and bites her nails, wondering if the glitter polish will poison her.