What's unfortunate about this is that most of the character models lack any sort of life, and thus at times look like walking zombies. (darkstation.com)
Every couple feels like a pair of walking zombies during their first month at home with baby (and often for much longer than that). (whattoexpect.com)
Some parents who have young children have probably been deprived of sleep for months and are practically walking zombies. (parentherald.com)