She accused him of putting words in someone's mouth during the meeting, which only made things worse.

She smiled demurely at the teacher — butter will not melt in someone's mouth — yet she had clearly cheated on the exam.

If one gets nervous, it's easy to run off one's mouth and say something you'll regret.

It's easy to run one's mouth off when arguing with friends, and I often regret it later.

It's unwise to shoot off one's mouth when you don't know the whole story.

If one accidentally eats the wild berries, it's wise to wash out one's mouth immediately with clean water.

The pediatrician explained that hand, foot, and mouth disease is highly contagious among toddlers.

The clinic reported several cases of hand-foot-mouth disease among preschoolers this week.

Growing up, her mother insisted that washing one's mouth out with soap was the only punishment for swearing.

Growing up, I remember my aunt joking that she washed one's mouth out with soap whenever someone swore in front of her.