Humor is fine, but stuff that sounds childish (4chan memes, fart jokes), or sarcastic tends to get downvoted. IMHO with good reason: sarcasm isn't a good way to make a point. Sarcasm is about making your conversation partner look like a tool instead of bringing up an actual justification for your point of view. Good debate should be done with a "cold, hard facts" attitude and a non-aggressive tone. It's fortunate that even with the constant change in the user base, HN still strongly encourages moderate posts.
I actually upvoted you because I think -4 is overkill, but I must admit I don't get the point of your post. I don't personally see it as sarcasm... just a failed joke?
