Yeah, I really don't think he's above any kind of depravity, tbh. Have you ever read Emperor Joker? He's shown eating Chinese people. So above cannibalism? Nope.
I think whatever he thinks is "funny" -- he'll do. You know those people who laugh at pictures of charred bodies and things like that? He's laughing the hardest (Or he'd post them). (And believe me, there are people out there who do that...)