CD9
Updated: 12/31/2022 by Computer Hope
Shorthand for Code 9, CD9 is used in chat rooms as a code to alert other users that a parent, guardian, teacher, or another adult is watching.
A child may use the "CD9" term in chat to alert others in chat to not say things that could get the child in trouble with the adult who is watching them.
Note
The code "99" may also be used when the parent or guardian has left.