Utterly uninteresting repetitive music with a strong base-line listened to by people who have an over-inflated sense of themselves. Often listened to by young men in cars.
Do you want to go to that new club?
Nah, all they play is douche-douche music.
A device worn on the ear to identify a douche in public. Sometimes known as a bluetooth earpiece.
I wondered why the man was standing in the grocery store doorway talking to himself while blocking the in and out access for everyone else. Then I saw his douche tag and realized he was a douche.