I am 45 and kind of average at most things. Educated to degree level, OK job, quite creative. But there are so many 'normal' things I don't know or can't do. Nothing major just silly things are of little or no importance but it just struck me that I seem to be going through life in a little bubble of not knowing stuff!
I don't know what celery salt is or what you would use it for.
I can't carve a chicken, it looks like I set the dog on it when I've finished.
I can't cook rice.
I have no idea how to change a wheel (I am shamed by this one).
I still can't put a duvet cover on without a great deal of sweating and swearing.
There are many, many more a lot of them food related so maybe I'm just a shit cook. 
Is it just me?