A late '80s memory: I remember tuning in during a discussion on a small AM station. A talk show guest was saying, "I spend a lot of time each day around the office just laughing." The host responded, "To be clear about healthy laughter, though, we're not talking about cynical, sarcastic laughter."
After relaying what I'd just heard about sarcastic laughter being unhealthy, one of my family members responded, "We're in trouble in this family, then."
I couldn't--and still can't--argue with that.