If they exist, I would probably be a candidate target for one (or more).

I have a number of Commissioner Dreyfus-level haters. One pops up, from time to time, screeches, and throws poo. It’s kind of cute, actually.

I cry myself to sleep, every night, over it.

HN should make an exception and allow the poo emoji. It would save a lot of words and BS, and time-consuming attempts at rationlization, because really that's all some comments have to say: 'I don't like this, regardless of any evidence or reason or merit'. That would be honest - it's not the HN ideal but those comments are and will always be present regardless.

Imagine a comment with a string of poo comments beneath it. It would get their point across and the silliness would save bad feelings and flamewars. @dang should try it on April 1st or something. I'm serious - it would lighten things up a bit around here and, as I said, dispel a lot of white lies and manipulative posts.

If you post poo, that's the only character allowed in that comment, and maybe your only response allowed in that subthread. Also, you can't downvote the parent, and nobody can respond to or vote on a poo post. The UI would just be knowing how to manually enter the correct Unicode codepoint. New and recent accounts can't poop - bathrooms for regular customers only!

(I've now revised this comment about five times as I've refined my idea.)