(as) gentle as a lamb simile
Used to describe someone kind, calm and pleasant
She looks irritated and cold, but she is as gentle as a lamb if you get to know her better.
Her patients all say that she is as gentle as a lamb.
She is always as gentle as a lamb when dealing with hot-tempered people.
Used to advise somebody to calm down
To stay calm in a difficult situation and react to unexpected things quickly
Used to say that someone should cool down or calm down
The origin of this phrase is not clear.