scrunch up

verb

1. 1

   make wrinkles or creases on a smooth surface; make a pressed, folded or wrinkled line in

   The dress got wrinkled

   crease the paper like this to make a crane

2. 2

   sit on one's heels

   In some cultures, the women give birth while squatting

   The children hunkered down to protect themselves from the sandstorm