Not often. If it crosses my mind, you're going to hear it. Fortunately, most people are dumb enough to think I'm joking.

I'm told I'm very loud when I roll my eyes.

I live in a religiously sensitive part of the world and sometimes I put my foot in my mouth without even knowing it so I just avoid this kind of conversation we have here - the weather in northern ireland goes down well`! Outlook changeable!

With adults, almost never, which regularly gets me into situations where people are "offended" because I just said what I think about e.g. Jesus or Mohammed or because I just said "fucking hell" or both.
Luckily I tend to live in places where currently one does not get arrested or flogged for that, but I would probably already have been killed if it was 200 years ago in the same place or even these days in Saudi Arabia.

No, but I am kind and considerate with my viewpoints.

I self-censor too much, actually. I've long felt that learning to nod and grin was the tactful way to be, but I know now that it disagreements can be expressed honestly, as long as it's done in a respectful and rational way.

When I was younger, never. Now I'm better at picking my spots. Maybe I have less energy and It makes things a little less stressful.

Never. Let the chips fall where they may.