the.com/scruff
The loose skin nature designed as a kitten's built-in carry handle.
means The back of the neck's loose skin, or a person whose grooming politely declined to show up.
from From the older scuff and Old Norse skopt meaning hair on the head, the meanings later tangling into untidiness.
Kitten modePinching it triggers instant floppy calm in cats.
Double dutyMeans both neck skin and shabby person.
Scruffy spinoffBirthed the adjective for charmingly unkempt looks.