It appears to be the funniest sign of high intelligence; result of a study published on PsyBlog and SOTT on October 15, 2017.
After two years here, I had heard Bodhidharma’s laughter. I never heard him again. Is he still around?
Cosmic Comic Pundit Swami Beyondananda Calls for Evolutionary Upwising. Posted on Conscious Life News.