I'm tempted to post some with black boxes but I would be worried I would be banned.
This user a few years back had a Danny Phantom avatar. One day, in a post, I insulted him over it. He said "It's from research." and everyone was like "... What?" Then he posted the full image with a black box and everyone was like "OH GOD!"
My point: as long as we don't see snake, nipples, vagina, etc. you can post it.