what is even more certainly true is that having a "sense of humor" (and having the good sense to know when humor is appropriate and when it is not") ought to be considered an essential requirement in participating in an Epicurean community.
Cicero, De Natura Deorum, 2.17.46: Hic quam volet Epicurus iocetur, homo non aptissimus ad iocandum – minimeque resipiens patriam.
Epicurus may make a joke of this if he likes, although humor was never his strong point – an Athenian without the "Attic salt!"
Sense of humour should be strictly prohibited! Laughter makes faces wrinkle, bellies hurt and moods swing. And it's contagious. Now excuse me, I have to go back to my serious life. I have to drag myself to yet another pointless walk and get tired again and listen to those annoying birds chirping and having this awful summer breeze in my wrinkleless face. Ahhh, Wednesdays.