When a male or female defecates between a woman's breasts and pushes them together to see what picture is formed. Like the inkblot (Rorschach) test psychologists use on mental patients.
When Deebo came home he pulled a Choco-Schach on Mrs. Parker; Pastor Clever pulled a Chocolate Rorschach - AKA (Choco-Schach) on Mrs. Parker while Smokey watched through the window...