Look both ways before you eat yellow snow.

Taken from "Look both ways before you cross the street" and "Don't eat yellow snow."

A man may die, nations may rise and fall, but I just saved a bundle on car insurance.

Fool me once, shame on you. Fool me twice, practice makes perfect.

We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty, and special sauce, lettuce cheese on a sesame seed bun.

Ask not what you can do for your country, ask "would you like fries with that."

If at first you don't succeed, bite the hand that feeds you.

"Nice guys always finish last." combines with "You can't have cake and eat it too." and becomes;

"Nice guys always have cake and eat it too."

Thus proving two negative statements DO make a positive.

Fools rush in like a woman scorned.

"An ounce of prevention is worth a thousand words."

You can't make an omelette out of a sow's ear.