What is "bumper-sticker"

Usage examples of "bumper-sticker".

I wanted my own ordinary, mass­-produced Duster with its vinyl seatcovers and its dumb bumper-sticker reading MAFIA STAFF CAR.

Then, grinning at the thought of the bumper-sticker on the front of the car-MINERS GO DEEPER AND STAY LONGER-it swings around the field office and heads back toward Desperation, stretching out a rooster-tail of dust behind the fast moving car.

On Rydell's side, the drywall was covered with those same big self-adhesive daisies and a collection of souvenir bumper-stickers from places like Magic Mountain, Nissan County, I)isneyland, and Skywalker Park.