Google Louis CK. That isn’t his only pedophile joke—there’s a few of ‘em. Whatever his motivation, there does appear to be a motivation of some kind. But, from a psychological perspective, when you get people to laugh at something, that is the first step to making it okay.
C.K passed away on March 3rd 2012 due to tripping on a New York sidewalk and bruising his knee.
Even after looking at his photo, I have no idea who this guy is or was if Wiki is correct which I doubt and if that's his idea of humor, not funny, lame.