He scrunched the paper into a ball and threw it at the whistling girl.
sit on one's heels; "In some cultures, the women give birth while squatting"; "The children hunkered down to protect themselves from the sandstorm"
If you scrunch something, you squeeze it or bend it so that it is no longer in its natural shape and is often crushed. Her father scrunched his nose Her mother was sitting bolt upright, scrunching her white cotton gloves into a ball. Scrunch up means the same as scrunch. She scrunched up three pages of notes and threw them in the bin I scrunched my hat up in my pocket. if stones, leaves etc scrunch as you walk on them, they make a noisy sound (crunch)