Not my experience with the fedi, quite the opposite, tbh.

Fun coincidence in terms of "three assholes": the phonic punctuation mark ஃ in Tamil, which looks very similar to an asterism ⁂, is used to represent a voiceless glottal fricative (like the /h/ in "ham").

The two fun rectal-related bits:

• This type of character in Sanskrit phonology, a visarga, means "discharge".
• Its cousin, representing a nasal /n/ sound, is called an anusvara.

Disclaimer: I think this is all true, but I don't really know what I'm talking about, I was just looking into the Unicode a little.

The dinkus is my favourite punctuation mark! :D Although, the asterism isn't my favourite way to write a dinkus 🙃

I'll have you know my asshole is perfectly central!