Personally I didn't like your post or his. But I think you're being a little sensitive to negative comments if you think you're being "held liable". You called more attention to your vulgar post by arguing about it over and over. Your post also started the whole thing. I probably wouldn't have noticed either if you had just said "sorry" or even nothing and moved on. Koko should probably say sorry too but at least he hasn't been arguing that his post is harmless. You had a thousand analogies available and you chose a creepy one....what he and others said came later. Although unattainable my advice to/about you would be:
Prevent even darker online posts hereafter. Inspire, love, engage.