NSFW

The middle grade of internet content.

The scale goes:
Vanilla

Questionable

NSFW
Porn
OMG (but it’s someone’s fetish so who’s to judge)

Rule 34 Lite

If it exists, there is NSFW of it.

Person 1: “Did you know there’s NSFW art of butterflies?”
Person 2: “Of course there is… Rule 34 Lite.”