'Foams' in the Bible

Whenever it brings on a seizure, it throws him to the ground. Then he foams at the mouth, grinds his teeth, and becomes stiff. So I asked your disciples to drive the spirit out, but they didn't have the power."

Without warning a spirit takes control of him, and he suddenly screams, goes into convulsions, and foams at the mouth. The spirit mauls him and refuses to leave him.