If you drop a piece of food on the ground, and pick it up within five seconds, it's still considered OK to eat and not contaminated.
I dropped a potato chip on the dining hall floor, but since I obeyed the 5 second rule, it's still good.
by Dewey July 11, 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.
by The Return of Light Joker January 8, 2008
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A myth that says that if you drop food on the floor, and pick it up within 5 seconds then it's okay to eat. But research done at University of Illinois has disproved this, and says that food picked up in under 5 seconds had a significant amount of bacteria on it.
"Ewwwww! Your gonna eat that? It's been on the floor!!" "Yeah, 5 second rule."
by JoeB24 May 5, 2007
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1. When you're having sex with a pregnant woman and the fetus falls out onto the floor, you have 5 seconds to get it back in or else you must eat it.

2. When you trip and fall on the ground and your homie yells "5-second rule" and starts eating your ass.
1: Guy: Uh oh honey, it just popped out! My bad!

Girl: Well I guess you have 5 seconds to put Cleetus back in.

Guy: Oh, right the 5-second rule!

Oops it's too late now.
*Shoves Cleetus down his throat*

Girl: *Cries*

2: Bro 1: Watch out, your dick's untied.

Bro 2: *trips on dick and faceplants*

Bro 3: 5-second rule!

Bro 1 and 3: Start eating Bro 2's ass.
by Mike Hawksmall December 16, 2019
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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.
by Midorisan May 9, 2012
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A rule that states a penis can touch anything for up to five seconds before the object is considered molested.
Husband: (poking dick against cosmetic mirror)
Husband: Look honey! It's kissing its reflection.
Wife: Urg! Stop molesting my mirror!
Husband: I'm not. 5-second rule! See. Smooch, one second. Smooch, one second. Smooch, one second...
Wife: (leaves to buy a new mirror)
by Happy Jam July 28, 2011
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the 5 second rule is for Chairs, so if you get up another person has 5 second to take your chair
Bill: drinks anyone
ben: Beer please
Gail: tea
Ron: Coffee
Rob: Lemonade
Bill: okies
Rob: 5..4...3...2...1..0 JAcked
Bill: wat you going in my chair
Rob: 5 Second rule mate
by Checken April 15, 2008
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