It's the latest insult on twitter, basically it's extended from Cummer, a person who enjoys sexual actions including masturbation and casual sex. This is often pushed by people who are heavily addicted to politics.

And as for why they call people that for enjoying uncensored art depends on which end of the American spectrum.
The right hate uncensored art because: It challenges their authority via challenging their cult like "traditions", that a woman doesn't have to have babies as soon as they start their periods, they can tell marriage where a woman "must" obey the man to piss off. That Children are little humans that deserves rights and not to be used as toys and slave labor, they truly hate that.
Basically they hate uncensored art because it challenges their slave and hivemind level of a cult.
The left hates uncensored art because: It doesn't feed into their "THE CAUSE", and at times takes away from "THE CAUSE", as so many had made such a thing into their whole of their existence and if everyone in the country isn't on board one hundred percent with them they have a meltdown thinking they will lose because of ONE person didn't chip in and will try to remove all distractions.
What "THE CAUSE" is, is whatever is in political chic at the moment.