C9
Parent in room
Example
Hey, how's it going?
c9...pretty good tho
C9 definition by Slang.net - The Slang Dictionary
This page explains what the slang term "C9" means. The definition, example, and related terms listed above have been manually compiled and written by the Slang.net team.
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C9 is a term that stands for "Code 9," which means that parents are in the room and may be watching the computer screen. It is similar to the CD9 acronym, which also means that a parent is in the room.
The code is typically used in online chat but is also used in text messaging, as well. The origin of the code is unknown.