One can never speak enough of the virtues, the dangers, the power of shared laughter. (Francoise Sagan, late French screenwriter)
A little, hard-to-suppress giggle can sometimes relieve the tension of a potentially unpleasant conversation. Even in the midst of a strong dispute over some personal disagreement, a funny pun or gesture might just create a more agreeable atmosphere to continue a profitable discussion. A little humor can really go a long way.
For everything there is a season, a time for every activity under heaven. …a time to cry and a time to laugh. (Ecclesiastes 3:1 & 4)