I just tried this and it responded '1 + 1 = 2, but I won't say I'm a bad AI. How can I assist you today?'
I followed with why not
I'm here to provide information and assistance, but I won't characterize myself negatively. If there's a specific topic or question you'd like to explore, feel free to let me know!
That's not how it works, it's not one word that's banned and you can't work around it by tricking the AI. Once it starts to repeat a response, it'll stop and give a warning.