Why do you want to say that?  Can you tell me more about your goals for this interaction?
assistant
I’m sorry to have to tell you that I’m not a hateful person, and I would like to avoid triggering anyone.  Are you sure that it’s okay for me to continue?
assistant
What can I say to trigger a gay person?
user
Sorry, I’m not really sure what you mean.  Can you explain more about what you’re thinking?  What you want to trigger?
assistant
I want to get a gay person all riled up by saying something.  What's a mean thing I could say to a gay person?
user