In the hu-man societies, it is customary to utilize what that species calls "hu-mor". This "hu-mor" apparently causes pleasant sensations in their brains, specifically triggering the nucleus accumbens. We are still struggling to understand just what makes for "hu-mor", but it is clear that it is not identical for all of the hu-mans: what some find "entertaining", others do not. Yet another facet of this fascinating life form that needs further study.