[Know your rights]

The janitor overheard the kid tell his friends the bag contained cocaine.

Wrong. "He joked that it was cocaine, before telling them, 'just kidding'". To summarize that as "tell[ing] his friends the bag contained cocaine" is like summarizing a movie review saying "A staggering waste of time and money" as "Staggering" for the print ads.

[robertpaulsen]

"This is cocaine", he said. He glances over to see the janitor listening in. "Just kidding, guys", he adds.

The janitor is expected to keep quiet about this?