I lived with my mother, uncle and grandma until I was 8 years old, when I moved in with my dad. Me and my uncle were a bit close when I was little, though he's about 4-5 years older than me. I had to move back with my mother when I was 16. I had zero contact with him while I was gone (zero contact with any of my family during that time). This was on the ride from my old home back to my current home

The start of the car ride was fine. My uncle was excited to see me and my brother again, so he was joining the trip. Pretty early on conversation had went quiet, but I was fine with that, but then my uncle got an idea for a conversation starter-- he turned to me next to him and asked (paraphrased), "Hey, did you hear about the nonbinary [trans slur]s teaching kids how to have sex?"

I quickly responded "I'm trans. Nobody's doing that" (I'm transmasc)

He pretty much went "oh" and shut up for about the whole four hour trip. Didn't talk to me again, just the others a little bit, and after that he's never mentioned anything trans around me again and it's been two years, which has been nice

Nobody there actually knew I was trans at the time but nobody else in the car heard us, so sadly, this isn't how I came out to the rest of the family-- just him (I came out to the others at a later date, also pretty spitefully)

Small but nice