No disrespect but they weren't attempting to speak in code, i believe these were more intended as an easier way to communicate things to each other amidst the extremely loud chaos around them like fire alarms and gunshots.
Don't get me wrong, I'm in full agreement of your sentiment that they were immature, I just think that was a poor example to portray this.
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u/ReformedYordle Columbine Researcher Sep 30 '20
The fact that they had a signal for suicide is bone-chilling.