"Well," Cheung 1 said to Cheung 2. "Looks like we're stuck in this cell. Got any ideas of what we could do till the free period?"
"Hmm... we could try and talk to the other prisoners..." Cheung 2 suggested.
"Let's try it." Cheung 1 responded.

Cheung 1: "hey, other prisoner!"
Cheung 2: "Respond to us!"
Cheung 1: "Cmon, we're bored!"
Cheung 2: "Yeah, we're bored as hell!"