The 5 second rule is used to suggest that food that has fallen on the ground/floor is still fine to eat, as long as it has only been there 5 seconds or less.

Commonly the rule is simply extended to however many seconds is necessary to declare the food still edible (ex: 20-second rule).
"Aww crap, I dropped my hot dog on the ground." "It's alright: 5 second rule."
di p14nd4 11 luglio 2004

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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."
di dungbeetle 10 luglio 2004

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the belief that if one picks up food quickly after they drop it it is still good.
He choose to follow the 5-second rule despite the dubious way in which the floor was cleaned.
di The Return of Light Joker 07 gennaio 2008

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A widely known rule used to make morons feel better about eating off of the ground. Supposedly the food god protects all food for 5 seconds after it touches the ground. After which the food god will become angry and infest it with cooties.
Moron: Oh noes my sammich!
Food god: Hurry, pick it up. 5 second rule!
~5 seconds later~
Moron: ...What?
Food god: I am angered! I shall infest your sandwich with cooties!!
di I r mime 13 maggio 2007

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The window time a hot female has to make her point before a guy shifts his attention to her rack.
Hot Girl:I just read this book on feminist movement and realized how poorly men have treated women over the past century.

Hot Girl:Hey! Are you listening to me!

Guy:Oh! I'm sorry babe 5 second rule.
di Midorisan 09 maggio 2012

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an excuse to eat food off the floor.
Eric: *walking along, sees a piece of candy on the ground* NOM
Jason: Dude...
Eric: 5 SECOND RULE
di mr. fluffy penguin man 23 febbraio 2011

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Contrary to the belief, it is actually 5 seconds from when you see the food that you may consume it without it being dirty or at all harmful to your body because, come on, it's only been five seconds.
"Sweet! A cheeto!"
"Dude, that's been there for 3 days."
"But I just saw it, like, 3 seconds ago. 5 second rule yo."
di Sabrina O'Henry 06 maggio 2007

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