Plain Facts for Old and Young by John Harvey Kellogg

13. _Unnatural boldness_, in marked contrast with the preceding sign,

is manifested by a certain class of victims. It can be as easily distinguished, however, as unnatural timidity. The individual seems to have not the slightest appreciation of propriety. He commits openly the most uncouth acts, if he does not manifest the most indecent unchastity of manner. When spoken to, he stares rudely at the person addressing him, often with a very unpleasant leer upon his countenance. In some few cases there seems to be a curious combination of conditions. While mentally fearful, timid, and hesitating, the individual finds himself, upon addressing a person, staring at him in the most ungainly manner. He is conscious of his ill manners, but is powerless to control himself. This sign is one which could hardly be of use to any except a very close observer, however, as few can read upon the countenance the operations of the mind.