Acoustic coded means: When someone or something is fundamentally, DNA-level earnest and oblivious to irony - like sincerity is just hardwired into their operating system. Acoustic coded people don't do detachment or. It has drug-related associations; worth a calm conversation about which side of the topic your teen is on. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.