Some of you here seem to have a rather hard time when I'm being blatantly ignorant/sarcastic. About 75% of you.
I see this isn't your first time on the internet.
Perhaps you're familiar with the fact that sarcasm is notoriously hard to read. Like deadpanning, sarcasm relies heavily on tone of voice to be understood as sarcasm. As such I don't think it's really anyone's fault besides yours that people are misunderstanding you. You chose the words. If they weren't what you meant to say, why did you pick them?
Words have connotation and denotation; regardless of your usage, those words mean something to other people in the broader context.
Even using your strict definition of slut, what you said to Kats still implies that she's overly promiscuous. It's a slight on her character, and a completely unwarranted one I might add.
Also, LOL at blaming the site admins for banning you. I've banned enough people in my time to know that admins don't ban people, people ban themselves. Admins just rubber stamp it, pass you through the bureaucracy, change your permissions to banned and hopefully auto-ban your IP range from ever registering again.
It's the mark of a truly naive person to blame everything in the world except yourself.