doucheswag

Signage, decoration, or other paraphernalia added to one's identifying possession(s), such as a vehicle, which the owner thinks makes them look cool but, in reality, just announces to the world that they are a douchebag.

Did you see all the doucheswag on that truck? Dangly truck-balls, blinding LED accent lights, and a "suck-on-this" bumper sticker to boot!