Final Answer:
In the given context, Professor Snape did not laugh at a joke about the hag, the healer, and the mimbulus mimbletonia.
Step-by-step explanation:
The absence of laughter from Professor Snape in response to the joke about the hag, the healer, and the mimbulus mimbletonia is indicative of his stern and often humorless demeanor. Snape, portrayed as a strict and serious character throughout the Harry Potter series, is not easily amused, especially when it comes to jokes or humorous anecdotes. The specific content of the joke involving magical creatures like the mimbulus mimbletonia may not align with Snape's interests or sense of humor, contributing to his lack of reaction.
Furthermore, Snape's role as a Potions Master and his generally reserved personality make him less prone to displaying amusement openly. The joke may have been met with Snape's characteristic indifference or even disapproval, reinforcing his reputation as a strict and enigmatic figure within the Hogwarts staff. The dynamics of Snape's character, as developed by J.K. Rowling, create a contrast with other more lighthearted or humorous individuals in the wizarding world, contributing to the complexity of character interactions and relationships within the narrative. Snape's lack of laughter becomes a subtle yet significant detail that reinforces his established personality traits and adds depth to the portrayal of Hogwarts' faculty.