Alright. You should stop now. Jokes aside. Someone is going to take it seriously.
I always clarify and send PM's if someone takes me too seriously I never ever continue a back and forth. I could include the sarcasm smiley but maybe people shouldn't take crap so seriously? It's like this really hot girl I was having a great convo with and I jokingly said she looked like a boot in as obvious a joking tone as possible and she got upset because she was so self absorbed. Someone that foolish and reactive isn't worth being worried about!