I'm a <slur>.
If I call myself a "tranny", I can expect a wide range of reactions:
• startled – "Oh, I thought that was a bad word!"
• neutral – "Not my business what folks call themselves."
• angry – "I heard that word is offensive and I'm calling you out!"
• friendly – "Sisters gotta stick together!"
• confused – "You're, uh... into automotive parts?"
...and so on. But which of these responses is "right"?
I'm a <slur>.
If, after asking for clarification, it becomes unambiguously clear that they're intentionally being hurtful, then give 'em hell, sure.
If it turns out they're just using terms familiar to them, be gentle. Words are habits, and bad habits are very difficult to break. (Good habits are healthy; be open to that possibility, also!)
I'm a <slur>.
@ElectricKeet Turns out it's the "automotive parts" one that's right, to everyone's surprise. Who could have guessed?
I'm a <slur>.
@Soreth My mechanic?
I'm a <slur>.
@ElectricKeet Well, okay, except the mechanics. They know how everything works.
I'm a <slur>.
When I encounter someone using a word in a context or fashion I find problematic, I like to address it this way:
"Before we go on, I gotta make sure we're on the same wavelength here. What do you mean when you say '<slur>'?"
Yes, I'll even repeat the word or phrase verbatim, because my goal is not to make anyone ashamed of their way of speaking, but to get an idea of what they _intend_ to say. I want to react to the ideas, not just their shadows.
It usually works very, very well.