10-4

10-4 means "OK," "understood," and "affirmative." Commonly known as CB radio lingo, originating from the need for brevity in radio transmission.

me--"Is anyone there?"
respondent--" 10-4"(to indicate presence).

me--"Let's roll."
respondent--"10-4"(to indicate agreement).

10-4 by Mis2y September 21, 2006

10-4 dinosaur 

elite verison of Ok boomer but seems better :P

older person: yoo i remember this song, it's soo nostalgic

person: 10-4 dinosaur

10-4 dinosaur by EvilTrivago February 18, 2020

10-4

affirmative.

“Are you pulling in at the next truckstop?” “That's a big 10-4 on that.”

10-4 by Delbosco October 10, 2021

10-4

An acknowledgement

ME: Whats your location
YOU: Just crossing the bridge
ME: 10-4

10-4 by Rick Brock March 7, 2004

10-4

Understand, Affirmative, Confirmed

This is Romeo 1 to all units we have got 3 vehicles sighted at Heroin Processing, Over.
This is Kilo 2 10-4 On last, responding now, over.

10-4 by Legpain August 27, 2017

10-4

A term used in police pursuits meaning, "Understood".

"Attention all patrolling units, we have had numerous reports of a high speed street racer on the 192 East."
"Uh, have you got any more info on this call?"
"Driver is currently in a black Atom 500."
"10-4, copy that. I'll be on the lookout for this guy."

10-4 by Mitcho2001 May 1, 2016

a 10-4 

when the appearance of someone, usually the opposite sex, seems to be, on a scale from one to ten, a ten from far away, but when approaching the person you unfortunately realize they are merely a four. You may experience the feeling of disappointment.

KiKi: damn, that man is fine
Susie: na girl, he's a 10-4

a 10-4 by best girlz February 8, 2010