I heard from a Chinese friend in Beijing that this is the new slang everyone's saying these days. Am trying to learn more about it but for now here's the Chinasmack definition:

吊丝
[diào sī / diao4 si1]
noun.
Roughly “loser” or maybe “douchebag” when used negatively but often is used humorously. This term originated on a Baidu discussion forum, and describes someone who is poor, ugly, short, good for nothing, a failure in life, and even prone to excessive masturbation. It has become a popular term similar to the Japanese term “otaku” and can be used to refer to both males and females.

http://www.chinasmack.com/glossary#吊丝