Like the 5 second rule and 10 second rule, except this one happens on a much dirtier floor, in which you are alloted no time to pick the food up and eat it.

An unwritten law dictating that if a food or other consumable item is dropped onto the floor, it may be picked up up and eaten within five seconds. The reasoning behind this is that dirt and germs take six seconds to transfer from one surface to another.

A simple rule stating that food dropped on the ground is still perfectly edible if it is picked up in five seconds. Ingeniously created by guys for the sole purpose of reducing wasted food and allowing a person that second chance they needed to enjoy their food.

The First Rule of human food consumtion. If you drop the twinkie on the floor of your apartment and pick it up with 3 seconds, it's still good. If you try to put it in your mouth at any point past 3:01 seconds, you're a dirty bastard, and will probably die from gangrene of the mouth.

NOTE: This rule is not applicable in a gas station restroom (that's just wrong).

The rule by which one determines whether or not food is safe after falling onto the floor. That is, if you are able to retrieve said item within 5 seconds, it is not dirty and is safe to eat.

* Note: in fraternity houses, this rule is the 1.5 second rule. Rule is invalid in the restroom.

This is a very complex law of physics. It states that if food (goldfish, for example) is dropped on the floor, it can be "safely" eaten within five seconds. The five second rule is very fun to apply when in...say...architectural drawing class, usually when Mr. Johnson leaves the room.

If a female does not enter within 10 seconds of a porno that is showing naked males it is a gay film but if a female enters the film within ten seconds it is not a gay film. AT ALL!