They squirmed, kicked, flailed their sharp little fists, and gnashed their teeth; Harry spent ten whole minutes trying to squash a particularly fat one into a pot.
The Wicked Witch was so angry when she saw her black bees in little heaps like fine coal that she stamped her foot and tore her hair and gnashed her teeth.
Tyrion gnashed his teeth. A second mistake, fool, fool, fool of a dwarf. Keep your calm or you're doomed. " No. I beg your pardons, my lords. His lies angered me" .