Here's a dialogue from the movie. Three characters are discussing a rather serious issue, two of them begin laughing, the third doesn't get the joke. I didn't get it too. Help?
Characters:
Doc - an overly logical person, PhD (the one who didn't get the joke), female, respected by both other speakers
FBI agent - male
Boss - male, the oldest, direcor of the large Institute and Doc's boss, usually is very serious
(Discussing the results of the invistigation. All three are serious).
...
Doc: Marni Hunter wanted to document the treasure, not steal it.
FBI agent: So Duke killed her and threw her down a bottomless pit.
Doc: Kyle wasn't so innocent himself. He hit Duke in the crypt with a candlestick.
FBI agent (laughing, to himself): Kyle hit the Duke with a candlestick in the crypt.
Boss (laughing, to FBI agent): That's very good. Very good.
FBI agent (to Boss): Right?
Doc: What? What's the joke?
Boss (to Doc): Wha...?
FBI agent (to Doc, pointedly) Clue?
Doc: What clue?
(FBI agent and Boss are laughing.)
Doc: What clue?!
FBI agent (to Doc): Unbelievable, Doc.
Coworker (entering the room): What's funny?
Doc: I have no idea.
Me too. I have no idea what all this laughing was about. Was it because the rhyme? They were rather put down when the conversation began.