Nothing says "world change" like a big, permanent sticker slapped on your preferred mode of transportation.
Cause everyone will read it and learn something they
never thought of before, you know. What they just don't get is why people can't seem to remember to wave with all their fingers. It certainly doesn't have anything to do with those (insert your pet peeve cause here) bumper stickers.... not at all.
As for the OP, my vote would be for their hairstyle. Sometimes those are truly appalling.

The sticker I hate the most belongs to some guy on campus. It's stuck to the back of a convertable BMW and says, "Don't let the car fool you, my real treasure is in Heaven." If the car isn't important, why didn't you buy a more reasonable car and spend the rest of that $$ on a worthy cause/food for the family/ something not so arrogant?
-Ulla who definitely tries to remember to wave with all her fingers.