This mostly comes from reviewing the rules against creepy comments on e621. Yes, creepy comments suck. But did they really have to give "Fine addition to my collection for erection" as an example? I mean, come on now. You're crossing the line twice with that one.
Have you ever had one that was audacious enough to make you chuckle a bit at its absurdity/humor?
Site rules and expectations being what they are, I might suggest you spoiler any comments that you think might go a little too far. ([spoiler]text[/spoiler])