How ordinary can those people be who come up with exquisitely sick humor?
There are plenty in mainstream media: the modern raunchy cartoons (South Park, Family Guy, others lesser known), Howard Stern. But those guys get paid to do it.
The internet has bred a bunch of amateurs that do it just for fun. When official censorship is nonexistent, a contempt for polite bounds can create little monstrosities. When the quality of offensiveness hits the “unreal” point on the scale, the audience multiplies. Maybe it’s the same yearning for shock as an ogler at a car crash. Maybe it’s release from a regimented day. For me, it’s just wishing that, damn, I could somehow be that funny.
Some classics, each one totally offensive in its own special way: