Key to humor:
Know what makes you laugh. Like your own jokes. Learn the stimulus that stimulates your brain’s humor center. Then the same stimulus will also stimulate others, because everyone has the same seeds (like Indra’s net). Everything is reflected everywhere.
Key to sex:
Know what gives your pleasure. Learn what exactly pleasures your own body. That allows you to do the same to another, because of the fractal like recursive nature of all humans. (because of Indra’s net, all seeds of potential are there/reflected everywhere)