[Nwbie]

I had a question I was wondering what pictures are allowed, because the line seems a bit fuzzy to me.

I was wondering about a clothed girl with cum in her mouth or face?
What if it's spit?
What if it's milk?


A butt in underwear?
A butt in pantyhoses?

A guy's nipple?
A girl's nipple?

And there are probably more fuzzy/unclear things, especially regarding cartoons, captions, etc.