Abbreviations

I recently had a conversation with a coworker that went smth like:

Me: Seems like this game doesn't have a date attached to it
Coworker: 10-4
Me: Wait, that's the date we're launching it? Huh?

Actually, my coworker was utilizing Citizen's Band (CB) Ten-codes in daily-speak.

Ten-codes, properly known as ten signals, are code words used to represent common phrases in voice communication, particularly by law enforcement and in Citizen's Band (CB) radio transmissions.

[Via]

Switch up your dry conversations with some of these plausible examples of ten-codes:
10-4: Roger that; message received
10-6: Busy (ex. 10-6, go away)
10-7: Out of service (ex. 10-7, no more work, no mooore ...)
10-9: Repeat message (aka. whadusay?)