Here’s a 3-minute video of a bunch of people chortling. Now, I don’t know how you use that word, but it somehow makes me think of the sort of laugh that predators do, when they reflect of having got something for nothing. Listen to the way someone laughs when they’ve come upon some new business opportunity to get rich quick. That’s chortling.
Here’s the video. (Good thing Google bought YouTube, ’cause it’s way better.)
Anyway, notice the use of euphemisms throughout, assuming you’re familiar with the subject matter.