You could respond in a straightforward manner that conveys that you're not interested in engaging in that kind of conversation. Here are a few options:
- "No, that's not my style."
- "I don’t really use that kind of language."
- "Not really my thing. Let’s keep it respectful."
- "I'd rather not. Let's talk about something else."
Choose a response that fits your tone and the relationship you have with the person.