When a girl who usually wears a flawless full face of makeup goes without any product, usually while running errands, and the contrast is significant. Dark under-eye circles, blemishes, and washed-out looking skin combine with small-looking eyes (from no eye makeup) to create a face like a newborn rodent or "baby hamster face".
She ran to Target in her tattered pajamas, sloppy bun, and baby hamster face because she didn't have time to get ready.