The proper way to spell this word is "douche" bag. As every knows, a "douche" is a vaginal cleaning. Hence the word "douche bag" relates to a dirty, fetid, lowly, or stupid person; an ignorant derelict.
Stop wasting time, DOUCHE BAG.
Hey DOUCHE BAG, get your muddy ass sneakers off my carpet.
Northeast Philadelphia motorcycle gang comprised of sexy non-harley hogs and hog riders that are susceptable to Pabst, boobies, hippie music and not wearing helmuts. *note: clarify which kind of dooshbag you are talking about by saying either 'in a good way' (which would mean gang member) or 'in a bad way' (a dickhead) after the actual word 'dooshbag'
eg.1:That guy Frank is a real dooshbag... in a good way!
eg.2:That Nicholas Cage is a real dooshbag... in a bad way.