Raising kids is hard. Gets tough when they go through those teen years. I've got 4, ages 22-14.
So, the feeling... well, you try and try and try and TRY to impress upon the thick-headed, brain damaged (think Bill Cosby here) children some important concept and for YEARS it seems like you've been just shouting into the void. Worse, it seems like the children and the void have been mocking you the entire time when...
In one glorious moment, one kid will totally get everything you've been saying as you're trying to educate one of your other kids and that first kid will just chime in and just... put it all out there just as you've been saying all along.
Now... THAT moment... of validation... of vindication... of feeling like it's not all in vain and I'm not crazy... well, THAT, my friends, should be bottled.
I know if bottles of that were on sale at Sam's Club or Costco, I'd be waiting for them to open to pick up a CASE...