I can take a joke. I had my laugh. I politely made a suggestion, you thought about a better solution. I respect and agree with your decision, but the bolded part was unnecessarily rude from your end.
I wasn't trying to imply that YOU can't take a joke. You said it will "bait people" into a useless discussion. I was talking about the people that you think may be baited into a useless discussion. If they can't see the thread for what it is, it's their problem and they probably shouldn't post in a joke thread.