I don't know how the bumper sticker craze first started. Perhaps it had something to do with the 1952 Presidential campaign. It still remains a way people can shove their opinions in our faces. But, luckily, some jokers out there have decided to have a bit of fun with the whole bumper sticker phenomenon. These are 15 of the funniest stickers I have ever seen. Prepare to laugh louder than a Ferrari engine!