At what age you do decide, "hey, I'm old enough to be an '@$$hole' to everyone and just not care"

Is it like timed??? Does it just happen one day???  "Oh, I turned 75 time to turn off the filter and let all my thoughts out".

I don't take offense because I am me and I try to not be offended by everything.  But it doesn't make it "okay" because not everyone just rolls with it.  It isn't all "Old" people but a striking majority feel like they can say whatever they want to whomever they want just because they are old and I don't know when that happens but it just does. 

And I'm not talking about the innocent comments where there is a generation gap and they don't realize its inappropriate.  I mean when they say things that everyone...no matter what age...knows is rude.  Its like "I'm over 80 now, I have no more f**ks to give".  It's funny (at least to me) but I can see how it can be damaging to those of a more sensitive nature. 

So I went visit the elders.  I brought treats because I am a good little youngin'.  About 5 minutes after we finished said treats our Matriarch said "Hmmm your tummy is poking out.  Are you sure you're not pregnant..." What on Earth...?!?! "Ummmmm, *trying not to be a sarcastic twit* yes, I am 100% sure.  It's because I just ate a bunch of sweets.  It will go down after I digest and stuff".  Her response...was...  She said "Oh, is that a thing.  You shouldn't eat before you go out on dates then.  People will think you got knocked up".  OMG what?!?!  *hahahaha*  "I am married...I mean we go out on dates but if people thought I was preggo it would be okay...".  Then she said "Well make sure you wear baggy clothes at home so he doesn't think you are getting fat".  Oh good God...tell me how you really feel *hahaha* "Okaaaaay, I'll do that... *trying not to roll eyes lest I get backhanded*".

She didn't mean any harm (I don't think), she just has zero filter.  I know in my heart she wasn't trying to hurt my feelings but some of my other relatives may have taken MAJOR offense to that.  Plus she knows we aren't getting PG but she doesn't know all the annoying details of that not working so you can't fault her there either.  I just don't know when that happens.  My other grandma does it too.  It's like they just say whatever they are thinking without thinking about what they are saying.  I guess after 80+ years you really don't care how PC you are, especially with your goofy family.