Interested in thoughts here. I've just been looking in a jeweller's window in my own world really and stepped in front of a woman also looking in the window. I'd put her in her 60s, she was with a guy about her own age and a younger guy. I didn't register her until she muttered something and then glared at me and said "manners".
I've got a lot on my mind at the moment and didn't think, I asked her what she meant and she said I'd walked in front of her for which I apologised but she carried on talking about having no manners. Of course I have manners but I wasn't thinking. She' made a mountain out of a molehill IMO. If someone had done this to me I really wouldn't care, and I'd accept an apology and move on.
I've got an uncle like this. Always going on about people not saying thanks for holding a door open for example. I take his point but he goes on and on, passive aggressively.
I'm not mannerless or rude but like most people I make mistakes.