Douche

"Douchebag", a new vocabulary that I recently learned from my office mate (well it's not really a vocabulary, it's a slang). One thing for sure is that you need to know this slang because you don't want to be called as a douchebag.

A douchebag is someone who thinks he is cool and trendy, and acts as if he is cool but turns out it makes him weirdos. Here's someone's description of it: http://www.factualmaterial.com/douchebag.htm