...I learned it from a bumper sticker. The red corolla hearts shopping. The black chevy is obviously not a fan of ford if Calvin peeing on it's logo is any indication. The list goes on and on. Anywhere from the painfully obvious (If you can read this... You're behind me.) to the deeply philisophical (Depression is just anger without enthusiasm) to the ever so subtle (what is the deal with those plain white ovals with block letters anyway?) bumper stickers have much to offer us young grasshoppers.