小辫子: a mistake or shortcoming that may be exploited by others; vulnerable point; handle 短语和例子有小辫子给人抓 have vulnerable points that others may capitalize on; 抓某人的小辫子 take it as a handle against sb
抓小辫子: have sb. by the short braids [plaits] -- find fault with someone; capitalize on sb.'s vulnerable point
