My favorite has always been:
"When the need arises, the object nearest you becomes a hammer."
To comply with this rule I bought one of these:
Tim Mullen wrote:
> If a part doesn't fit, don't force it. Use a bigger hammer.
> -- Smith's Law
> Thinly sliced cabbage.
> -- Cole's Law
> After your hands become coated with grease, your nose will
> begin to itch.
> -- Lorenz's Law of Mechanical Repair
> Any tool, when dropped, will roll into the least accessible
> -- Anthony's Law of the Workshop
> If it jams, force it. If it breaks, it needed replacing anyway.
> -- Lowery's Law
> There is no mechanical problem so difficult that it cannot
> be solved by brute strength and ignorance.
> -- William's Law