I don't mind pointing out some of the failings of old age, because we are all headed in that direction, unless of course we take our own lives before we become a burden. I'm not advocating suicide, oh wait, I guess I am.
A good trick is to fill your medicine cabinet with marbles. Nothing announces a nosey guest better than an avalanche of marbles hitting a porcelain sink. Plus you'll know which guest is a junkie whore or gutter hype, and you'll know what else to hide. Count your stash or remove the labels from your prescription bottles.