Sisters are always drying their hair. Locked into rooms, alone, they pose at the mirror, shoulders bare, trying this way and that their hair, or fly importunate down the stair to answer the telephone.

McGinley’s sentence turns a domestic, almost comic observation into a miniature portrait of girlhood and sisterhood. “Always drying their hair” suggests the repetitive rituals of adolescence—privacy, self-scrutiny, and the performance of identity—staged in bathrooms and bedrooms “locked into rooms.” The mirror and “shoulders bare” evoke vulnerability and self-consciousness, while the sudden dash “down the stair to answer the telephone” captures the social urgency of youth and the way private reverie is interrupted by the outside world. The line’s affectionate exaggeration (“always”) reads as wry, nostalgic, and gently satirical rather than critical.