You could say that about any word. When you’re saying it about another person, it’s almost always an insult. We give people a break when we can, but it becomes very difficult for us to enforce the rules we do have if we have to dig that deep to figure out someone’s intent. I believe you that you were kidding, but like the man says here:
Sometimes you don’t say what you meant to say, you just say what you typed. It’s one of the limitations of a text-based medium. I believe you when you say you meant to say ‘I’m not offended, but how do you expect me to climb a tree,’ but you could have just posted all of that and you didn’t. What you did post was this: