This is my own commandments. Some of them are made by other people though.
1. Thou shall not kill, unless you are a murderer...
Not so many yet, as you can see.
2. Thou shall not say yes, unless you have been asked something...
3. Thou shall not go over the river for water, unless you have got a lifejacket...
4. Thou shall not be bungyjumping from the kitchen table, unless you have got a rope...
5. Thou shall not be diving in the aquarium, unless you have taken a deep breath...
6. Thou shall not be looking straight at the sun, unless it's daytime...(Risk you will get a neckache)