If Parkinson's is no laughing matter, then why is laughter the best medicine?

If Parkinson’s is no laughing matter, then why is laughter the best medicine?

It is safe to say that my attempt at New Year's humor went down like a proverbial lead balloon ... a "flight of fancy" reminiscent of the Hindenburg ... that thankfully was merely a test flight with no flight crew and no passengers. The unsubscribe requests were fast, and a few were furious. What I found to be most odd were the responses of people who wanted to lecture me that “Parkinson’s disease is no laughing matter.” ...