1 definition by dungbeetle

Top Definition
A highly scientific finding that says that germs need at least five seconds to jump on food that falls on the floor, enabling the person who dropped said food to pick it up and safely consume it, as long as they do so within five seconds of dropping it.
"Hey dude, that cookie's still OK to eat, the five second rule's in effect."
by dungbeetle July 10, 2004
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