pardon my frontal lobes

Was I rude?: Explains why senior citizens might sometimes seem tactless and forthright about things that people would assume are best discussed privately. It's become their aging brains become more uninhibited, and they lose the ability to hold their tongues.

I think I remember a research indicating that as people get older, they do not necessarily lose their hearing. On the contrary, their hearing may be perfectly fine, but it's their brain's inability to discriminate between sounds. That's why in a quiet settings, older people may understand your conversation, but in a noisy setting, they may complain about not being able to hear you because of the noises.

It's really interesting how hearing people can, during prolonged and interesting conversation, still hear their names called out and instantly turn their head which way the sound originated. Their brains are simply able to filter out extraneous sounds. If you tried, you could overhear any words from the noises around you, but usually you filter them out to focus on whatever you want to hear, namely your friends, families, co-horts, and so forth.

As they grow older, their minds grow weaker, and they become more frank, more annoying, more drunk in uninhibition, more like the elderlies.