The cunt one I think is highly contextual. There are certain specific contexts where I would not be shocked to hear it used casually, but it definitely is not as normalised as Internet culture would have you believe. I think one thing that is always true is that it does not carry nearly the same level of stigma as it does in other countries. In Australia, it would not be unusual to say "you fucking cunt" to someone who, for example, cut you off in traffic. In America, that response would generally sound far harsher than is appropriate in that circumstance. It's vulgar and avoided in polite company either way, but not to nearly the same degree.

Vegemite though? I fucking love that shit. I'm boring as hell and the only way I'll have it is with butter/margarine on bread/toast. No cheese. No scrolls.

Oh, I guess I will also have it scooped up by the finger.

The one that bothers me is the "dropbear" joke. It's boring and worn out at this point. And the doubling down and making the lore around them ever more increasingly detailed just worsens it.