If anything can go wrong, it will..

Anything that can go wrong, will go wrong.

If there are two or more ways to do something and one of those ways can result in a catastrophe, then someone will do it..

If there is any way for that man to do the job wrong, he'll do it that way..

If there is a wrong way to do something, then someone will do it..

The first thing you'll have to do, is the last thing you wished..

Every aquarium will eventually leak..