Cartoonists like to pull a switch, present a situation where the reader's expectations are met with something off-the-wall or different enough to evoke a laugh. Charles Addams was a master of the switch, or what can be called wide-eyed and surprised, when the onlookers in the cartoon see something startling.
These 19 drawings are taken from the online New Yorker archive, and were originally published in the early 1950s. All are shown here as examples.
Go back to the previous posting to see more Addams.