I'm autistic. I've never understood so-called "small talk" either. When people ask me what's up, I tell them "the sky" or "the ceiling". They think that's funny; I think it's obvious.

I'm about two meters tall. When people ask me how the weather is up here, sometimes I start to lecture them on the diffusive tendency of weather cells: "It's about the same here as it is where you are." I used to tell them that it's raining and then spit on them. One punch in the nose cured me of that.