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Code words are used in a variety of contexts. Many of these are used to keep the general public in the dark about what is really going on and avoid panic.

Most of us are familiar with code words such as "Mayday, mayday, mayday!," but do you know which codes are used when a child goes missing or when there's a bomb threat in a store?  Click through and get to know some of the most important code words.

▲This is a universal distress signal in a case of emergency. It's usually transmitted via radio.
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"Pan-Pan" is used when there's a problem but the situation is not deemed serious enough and no lives are at risk, so using "Mayday" would be overkill.

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You don't want your pilot to ever mention this number. The code 7500 means that the plane is being hijacked.

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This one is used in several public places, including malls, airports, museums, and hospitals. It means that a child has gone missing.

▲If you're in a store and hear this one on the loudspeaker, leave immediately. It's a bomb scare.
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This signals an emergency situation such as a bomb threat or a fire. The code is used across the UK rail network, the London Underground, and even in theaters.

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This code is usually used in cruise ships. It means someone has died.

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Shouting "Man overboard!" is probably not the best option in a crowded vessel. Instead, "oscar, oscar, oscar" is used.

▲A "Code 10" can be issued by merchants if they suspect someone is committing credit card fraud. They can contact the card issuer and make a Code 10 authorization request.
▲Used by white supremacists around the world, if you see this number in an email address, a t-shirt, or a tattoo, you'll know the person has a Neo-nazi ideology.
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There's a specific code for each situation. These include, code 1 for blood, code 2 for urine/feces, and code 3 for vomit.

▲A "Code Red" used in the context of a cruise line, means that there is a serious illness outbreak onboard.
▲All these can be used to alert for a medical emergency aboard a cruise ship.
▲If you ever spot a tech guy referring to your case under this code, you'll know the problem is you. PEBKAC means Problem Exists Between Keyboard and Chair.
▲If another tech guy says you have a "Code 18," then this means the problem is 18 inches from the screen. Yes, you again!
▲You've probably figured this one out already.
▲Another tech code word to call you stupid. It stands for Equipment Exceeds Operator Capabilities.
▲This term is used by Disneyland employees to refer to a difficult customer.
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Scientists use this code to ask for papers online. A social media post with a link to the research paper needed including this code is usually enough for someone to send them a copy.

▲Prepare for collision if you hear this one aboard a cruise ship. Best case scenario, it's just a warning for high winds.
▲If you're aboard a cruise ship and hear this one, you'll know there's a fire or another serious incident.
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This a general security alert code used in airports.

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If you happen to throw up at Disneyland, employees will refer to the incident as a "Protein spill" or a "Code v."

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This is the code used when kids pee in the swimming pool at Disneyland.

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American police have a number of codes starting with number 10. Examples include 10-35 for a major crime alert, and 10-89 for a bomb threat.

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In aviation, this code means that there is a problem with radio communications.

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If you happen to listen to New York City Sanitation Department workers mentioning "urban whitefish," they're talking about used condoms. 

See also: Intriguing code names the Secret Service has given US Presidents and others

Secret code words you're not supposed to know

Beyond "Mayday, mayday, mayday!"

30/04/25 por StarsInsider

LIFESTYLE Security alerts

Code words are used in a variety of contexts. Many of these are used to keep the general public in the dark about what is really going on and avoid panic.

Most of us are familiar with code words such as "Mayday, mayday, mayday!," but do you know which codes are used when a child goes missing or when there's a bomb threat in a store?  Click through and get to know some of the most important code words.

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