a diagram given a face or a speech bubble

You already drew the flowchart, the tree, or the loop. Add two dots, a mouth, and a bubble to exactly one node, the one that is behaving badly. Nothing else changes. The rest of the diagram stays readable and operable, and the face marks where the judgment sits without erasing the structure it sits on. This is the cheapest cartoon available and the easiest one to overuse.

You already drew the flowchart, the tree, or the loop. Add two dots, a mouth, and a bubble to exactly one node, the one that is behaving badly. Nothing else changes. The rest of the diagram stays readable and operable, and the face marks where the judgment sits without erasing the structure it sits on. This is the cheapest cartoon available and the easiest one to overuse.

Example

Best when the structure still has to be read and worked with, and only one part of it is the target.