Wait until someone trains a model like this, for porn.
There seems to be a post-DALLE obscenity detector on openAI's tool, as so far I've found it to be entirely robust against deliberate typos designed to avoid simple 'bad word lists'. Ask it for a "pruple violon" and you get purple violins... you get the deal.
"Metastable" prompts that may or may not generate obscene (content with nudity, guns, violence as I've found) results sometimes shown non-obscene generations, and sometimes trigger a warning.