I was on my Paladin, watching people duel outside Orgrimmar, when I get a whisper from a Hunter named Artines asking me to buff him. Trouble is, the buff he wants doesn’t exist. And my attempts to tell him this (by making stupid jokes), fails miserably.

I was hoping that by making these comments, he would realise his mistake and ask for the proper buff, which I assume was this one.

No, he’s still adamant that he wants ‘Blessing of Knights’ – which to my knowledge has never existed. There was nothing on Wowpedia or Wowhead about it.

Sadly, Artines didn’t seem to appreciate me telling him the truth like this. Oh well, I’m sure the next Paladin he asked put him right.
You just sound like a elitist grammar nazi picking on someone who might not have english as there first language.
If he didn’t have English as his first language, I’m pretty sure he would have mentioned it.