A little
piece of paper that has an
adhesive on one side, and a
saying/
design on the other, meant to be put on the
bumper of a
car.
Some are meant to entertain, others to decorate, and yet others to let people know how you feel about an issue.
Common bumper stickers include "honk if you love ____", "Jesus Saves", or "I'm going to kill you all!".