Wait, I thought sarcasm was indicated by a purple font color. I've been misreading Silk for years!
In all seriousness, if the sarcastic exchange over the internet between two native English-speakers takes more than this...
Poster 1: I totally love it when people show up to weapons check with stuff they know won't pass!
Poster 2: What? Really? I don't think it's the weapons checker's responsibility to hold the hands of experienced fighters every step of the way.
Poster 1: Dude, that was sarcasm.
Poster 2: Ah, upon re-reading your post, I see that. I have clearly misunderstood your intent. My bad.
Poster 1: It's cool. Anyway, getting back to what we were talking about...
...then someone needs to revisit how one uses language to communicate. It's not the community's responsibility to hold the hands of adults every step of the way.