Finally saw a good bumpersticker the other day: Life IS a dress rehearsal...for DEATH.
Bumperstickers-- I do not like them. If you can reduce your ideology so that it fits on a bumpersticker that truly represents your identity in some significant manner then you're probably pretty fucked up. It's like when you were all excited to tell me that the original of Brel's "Le Moribund" is superior because it included bitter sarcasm and references to his wife's infidelity that were missing from the English-language adaptation known as "Seasons in the Sun." It's not an awesome revelation.
Or, it's like when a guy leaves a city as a free agent to form a super-trio in another city, to create an all-time team, and you have some passionate opinion about it, something that could be expressed on a bumpersticker or even by igniting a burning home jersey and writing in the sky with fire.