Laughter plays an important part in NLP.

The Olympian vice. – In spite of that philosopher who, being a true Englishman, tried to give laughter a bad reputation among all thoughtful people –, “laughter is a terrible infirmity of human nature, and one that every thinking mind will endeavor to overcome” (Hobbes) –, I would go so far as to allow myself a rank order of philosophers based on the rank of their laughter – right up to those who are capable of golden laughter. And given that even gods philosophize (a conclusion I have been drawn to many times –), I do not doubt that they know a new and super-human way of laughing – at the expense of everything serious! Gods like to make fun of things: it seems as if they cannot stop laughing, even during holy rites.

Beyond Good & Evil paragraph 294