何足挂齿

Explanation: Feet: worth; hanging gear: mentioned, talked about. Where should be hanging in the mouth. Meaning not worth mentioning. 　　Usage: Verb-object type; as predicate, object; for the kind words 　　Source: Han Ban Gu "Han Shu Suntong Biography": "This special Qundao rats Pirates steal the dog, between the teeth Kazuya mention the home?" 　　Examples: But our ancestors left behind several broken book, not worth selling, whatever the line trunk solution with boredom children, when the fiction books to read fills ~. (Qing Liu E, "Travels," the third chapter) Thesaurus:  Afraid of such Michiya