My new analogy for this is that LLM output is, to put it bluntly, cum. Yes, the ejaculate that comes out when a man pleasures himself.

"Slop" is too kind of a word and ignores the other half of the "transaction", that the slop-creator derives immense pleasure from creating said slop.

I call it for what it really is. Jizz, cum, splooge, semen. The result of someone pleasuring themselves for a few minutes until ecstasy, and leaving a mess for everyone else to consume.