Humblebrag, the combination of humble and brag, is the lowest, most despicable and loathsome form of self promotion, often delivered in one or two fragmented sentences on social networking sites. A typical and popular approach is to use a disingenuous complaint about something, a self-deprecating statement or a comment on something completely innocuous, as a vehicle to deliver the real message, which invariably shows the person in a favorable light. In fact it shows what an attention seeking and insecure person they really are. (Source: urbandictionary.com)

Humblebrag，就是humble（谦虚）和brag（吹嘘、自夸）二词的合成形式，即“谦虚自夸”，是一种最低级、最让人鄙视、最令人厌恶的自我吹捧方式，通常以一两个零散句子的形式出现在社交网站上。常见的典型“谦虚自夸”手段就是通过对某事很虚无的抱怨、自我贬低式的言论或者对某个毫无关联事物的评论来传递他真正想传达的信息，而这个信息体现的肯定是他好的一面。事实上，这种谦虚自夸行为说明他们是极度需要关注、极度缺乏安全感的一群人。

For example:

Wow, I can't believe that a rubbishy little article like mine had been published in a national news-paper!

我真不敢相信我这样一篇毫无价值的小文章竟然在一家全国性报纸上发表了！