'Mouth' 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."

So they brought the boy to him. When the spirit saw Jesus, it immediately threw the boy into convulsions. He fell on the ground and kept rolling around and foaming at the mouth.