I do not watch MLP. I am not a fan of it, as such, I was not aware that she was dressing as a character from said cartoon at the time. And I would greatly appreciate it if instead of saying 'what the hay is wrong with you' and expecting everyone to automatically know the ins and outs of something you yourself are well versed in, that you just calmly say, 'she is dressed as such and such character'.
You're right, I have trouble taking a joke through text. I can't hear the connotation in which the line is being said so...it makes it hard to know when something is or isn't a joke. Sorry for acting like that when you were just kidding around, I apologize. That was extremely rude of me.