The beginning of the end

Me: hey mum, Happy Mother's Day!
Mum: Thank you darling, how are you doing?
Me: Very excited! I have just bought an orbital sander to restore the dining table I have just picked up.
Mum: Well just be careful my love...
Me: Mummmmmmm... A sander is not really dangerous you know, unless you are really clumsy, you can't really hurt yourself.
Mum: I was not talking about that, I am concerned about your arthritis hun, as it vibrates a lot...
Me:...
Me (later): I guess that what it means to get older: when even your mum reminds you that your body is slowly but surely crumbling. As yes, I just turned 30 and yes, I have arthritis.