It can be scientifically proved that, at least while they’re listening to cases, Scalia is the funniest of the justices. As recently as 2004, the official court reporter identifies the justices’ remarks, questions, and comments; using the notation “(laughter),” it also notes any justice-induced jocularity. After mining the transcripts from the 2004-2005 session, Boston University law Prof. Jay Wexler determined that Scalia was the funniest justice by a landslide, “instigating 77 laughing episodes.”
If I had a high-paying job with no boss and no chance of ever being fired or laid off, I would be in a jovial mood also.