Universal rule of life;

"When a passenger of foot heave in sight,
tootle the horn. Trumpet him melodiously
at first, but if he still obstacles your
passage, tootle him with vigor."
  -From a brochure at a Tokyo car rental firm

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Universal Rule of Pinball:

As I understand it, the way it works is if you don't hit anything but the middle, the ball comes back, since it thinks that the launcher just shot the ball back into the hole.

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There are a few universal rules which have been around for a long time, things like "Don't spit into the wind!" and "Don't draw on the Lone Ranger!".

Here's a new one: Don't let your wife count your Viagra tablets!

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"Last applied takes precedence" is not a universal rule; in fact, it's not even a rule at all--the rule is "apply existing effects in the order played", which usually works out to "last applied takes precedence" but doesn't always. And "apply in the order played" is not a universal rule; there are cases where more specific rules apply.

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Universal rules are identifiable when *all* human cultures have always adopted the same rule, although even then, cultural mores may influence how that universal rule is interpreted. For instance the universal rule against theft is dependent on the cultural definition of property, and the universal rule against causing needless harm is dependent on cultural definitions of what is "needless", and (though to a lesser extent) even what is "harmful".

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And worse yet, the more prestigious the publication, the more insipid the poetry. Perhaps it's in keeping with the universal rule: 95% of everything is nonsense.

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"Now that we've mapped the human genome, it has been proven that the universal rule is 95% of everything is nonsense...including this advert."

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One universal rule applies everywhere: the entering traffic should try to match the speed of the traffic stream into which it is attempting to merge.

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Friesen implies that there exists some general rule in the history of science that every theory held as true which is later falsified is always subsumed as a special case in some more general theory which replaces it. While this does occur sometimes it is hardly a general or universal rule in the history of science.

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You are presuming to apply a 'universal rule' which is NOT universal. The 'universal rule' you presume is that 'we all agree we shouldn't kill others.' But in the face of individual self-defense, we realize that rule is NOT 'universally accepted.' I certainly DO NOT want it to be a 'universal rule' that we should not kill others, if I see myself threatened with annihilation by another entity.