The phrase “二百五 (èrbǎiwǔ)” refers to people who are silly, innocent and careless. Though this word is a little negative, it is commonly used in daily life. Sometimes, instead of sincerely trying to insult someone, it is used as a friendly way to comment on people who don’t think or do things carefully. Now, many people also shorten it as “二 (èr),” which is used as an adjective or adverb. To be honest, I don’t like this word. In my opinion people who say this often is a mean person.
Lǐ Léi: Nǐ gēn nǐ jiě zhǎng de hǎo xiàng a.
李雷： 你 跟 你 姐