10-8 

To smoke up. Get high.

Sarah: Hey Tova, want to go 10-8?

10-8 by Brown Eyed Girl September 5, 2005

10-8 

The federal police code used by police and sheriffs all over the US to indicate that the officer is on duty.

Officer: Sheriff Deputy First Class Milcroft, calling a 10-8 status.
Dispatcher: 10-4.

10-8 by AnimationGamer November 14, 2017

10/8

The latest in a long line of using a date to signify a terrorist attack, making the journalists job easier as they have shorthand...but misses the point entirely.

The reason? How can two dozen men being arrested on suspicion of looking Arabic be at all related to 3000 people being killed on 9/11? There was no attack, so therefore the term is meaningless, journalistic slang that led to paranoid airport security.

The fact that, a month on, those not released quietly are being held on not giving evidence of a terror attack is quite fishy, don't you think?

Journo 1: "The police are trying to appear important by randomly arresting two dozen people without evidence, and can't get their story straight!"
Journo 2: "Quick, in order to make it easier and scare the readers into buying our paper for the way forward, give it a date. What's today's date?"
Journo 1: "10th August, 2006."
Journo 2: "10/8 it is, then!"

10/8 by OD Smith September 16, 2006

10-8 

Used to mean "in service", used by some prostitutes to signal that they are dtf

Guy: Hey are you. 10-8 tonight? Prostitute: Yeah my rates are still the same

10-8 by LEOs July 20, 2015

10-8 

Police/Fire/EMS emergency radio code that signals that a person is (In Service)

Dispatch: All units to fire at 123 Main Street

UNIT 1: copy dispatch I'll be 10-8(in service)

10-8 by DD-ud August 25, 2016

10-8 

!0-8 is usually used when a police officer goes on patrol.

Dispatch, show me 10-8

10-8 by CaliforniaHighwayPatrolOfficer May 28, 2018

10-8 

A common radio code in law enforcement, referring to a unit being available for a service.

As a slang term, it is also used to describe a person who was calm and suddenly became active.

Commonly written as "X8" (Roman numeral X=10)

"I will be 10-8 at 0600 hours."

"He was calm, but once I told him he was going to jail, he went 10-8 and started to fight."

10-8 by Basha2000 January 22, 2025