Children make erratic movements, loud noises and produce lots of activity. (petsforpatriots.org)
Regardless, encourage cat owners to incorporate slow movements, fast movements, erratic movement patterns and a variety of toys in the play period. (petbusiness.com)
As this shift to turbulent airflow occurred at high speeds, the ball could make some pretty erratic movements on the way to the net. (sciencedaily.com)