Is it socially acceptable for me to say "I don't care" and walk away from a conversation? 🤔

Whilst they're talking. Take off one sock and hand it to them before walking away without a word...

Your jacket, sir? 🤔🤔

I do it all the time
And have no idea if it's socially acceptable because...I don't care

It would be considered rude. That said, sometimes, it is appropriate to be rude.

No, not really.

Not if the conversation is about Feet