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7500 -

If a pilot mention 7500, indicates a hijacking of the plane is underway.

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Pan-Pan -

"Pan-Pan" is employed in situations where there is an issue, but the severity is not high enough to warrant the use of "Mayday," as it does not involve risking lives.

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Code Adam -

This particular one is utilized in various public locations, such as shopping centers, airports, museums, and hospitals, indicating the disappearance of a child.

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Time Check -

If you happen to be inside a store and suddenly hear this announcement over the loudspeaker, exit promptly as there is a bomb threat.

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Inspector Sands or Mr Sand -

The code, utilized in the UK rail network, the London Underground, and theaters, indicates an emergency event, like a bomb threat or fire.

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Operation Rising Star -

This code is commonly used on cruise ships. It means someone has died.

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Code Oscar or Mr Mob -

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

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Code 10 -

Merchants have the ability to issue a "Code 10" if they suspect credit card fraud. They can reach out to the card issuer and request a Code 10 authorization.

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Mayday, mayday, mayday! -

The universal distress signal is commonly transmitted via radio and is used in emergency situations.

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1488 -

If you come across this number in an email address, a t-shirt, or a tattoo, it is an indication that the individual holds Neo-nazi beliefs, commonly embraced by white supremacists globally.

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London Underground cleaning codes -

Each situation has its own designated code. These codes are as follows: code 1 for blood, code 2 for urine/feces, and code 3 for vomit.

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Code Red -

A "Code Red" within the context of a cruise line signifies a significant onboard outbreak of illness.

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Mr. Skylight/Alpha, Alpha, Alpha/Code Blue/Star Code -

All these can be used to alert for a medical emergency aboard a cruise ship.

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PEBKAC -

If a tech person ever uses this code to refer to your case, it means the issue lies with you. PEBKAC stands for Problem Exists Between Keyboard and Chair.

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Code 18 -

If another technician informs you about a "Code 18," it indicates the issue is at a distance of 18 inches from the screen. It's you once more!

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ID-10T -

You've probably figured this one out already.

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EEOC -

Another tech code word to call you stupid. It stands for Equipment Exceeds Operator Capabilities.

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Treasured guest -

Disneyland employees use this term to refer to a challenging customer.

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"I can haz PDF" -

Researchers commonly utilize this code to request online access to scholarly articles. Sharing this code along with a hyperlink to the required research paper through a social media post typically solicits others to provide a copy.

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Echo, Echo, Echo -

Be prepared for a possible collision while on a cruise ship. In the best situation, it might only be a caution about strong winds.

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Bravo, Bravo, Bravo -

If you're on a cruise ship and come across this phrase, it indicates a fire or another grave occurrence.

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Code Bravo -

This a general security alert code used in airports.

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Protein spill -

If someone vomits at Disneyland, employees will use terms such as "Protein spill" or "Code v" to describe the incident.

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7600 -

In aviation, this code signifies an issue with radio communications.

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Code Winnie -

This is the code employed when children urinate in the Disneyland swimming pool.

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U.S. police use a whole lot of 10s -

American law enforcement agencies utilize a series of codes commencing with the number 10. For instance, 10-35 signifies a significant crime alert, while 10-89 indicates a bomb threat.

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Urban whitefish -

If you ever hear New York City Sanitation Department workers refer to "urban whitefish," they're actually referring to used condoms.

Check out this link for more interesting code names used by the Secret Service for US Presidents and others.

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