Bumper Sticker Ideas...

Everyone has a photographic memory. Some don't have film. 

When the chips are down, the buffalo is empty. 

Seen it all, done it all, can't remember most of it. 

Those who live by the sword get shot by those who don't. 

I feel like I'm diagonally parked in a parallel universe. 

He's not dead, He's electroencephalographically challenged. 

She's always late. Her ancestors arrived on the June Flower. 

You have the right to remain silent. Anything you say will be 
  misquoted, then used against you.

I wonder how much deeper would the ocean be without sponges. 

Honk if you love peace and quiet. 

Despite the cost of living, have you noticed how it remains so popular?

Nothing is fool-proof to a sufficiently talented fool. 

A day without sunshine is like, you know, night. 

Back Up My Hard Drive? How do I Put it in Reverse? 

I just got lost in thought. It was unfamiliar territory. 

Eschew Obfuscation. (go ahead, look them both up!) 

Save the whales. Collect the whole set. 

Atheism is a non-prophet organization. 

On the other hand, you have different fingers.