I recently referred to someone as a "douche bag." Not to their face of course, because then I couldn't have the satisfaction of having a passive aggressive rant behind their back. The name fits. This person is irresponsible, a jerk, selfish, and in general a jerk. Whopsydaisy, I used the word jerk twice. Now, I know what a douche bag is in real life. Its a very clever invention for cleaning your tarantula. But the use of it to describe a person and their behavior, where did that come from? Any of you experts on word or phrase origin, feel free to pipe up.
I found this interesting urban dictionary entry: meaning of douche bag