To laugh at, and gain a sense of satisfaction from, the misfortune of others, all while augmenting said satisfaction through the act of pointing. Boy, those Americans have a word for everything!
When Capone tripped over that corpse, I totally nelsonmuntzed him.
To stroll, or hike, often with one or more companions, through any environment in order to observe the surroundings, discuss things of import to the participants and, just as importantly, to decompress from the stresses of daily existence, usually the soul-crushing banality that is the workplace.
Sure, we could get some Chinese, but let's go darkthroning instead, then we'll get Chinese, who cares if we're late in returning.