tampons? Seriously. It has to be well over 30 years of menstruation for my wife, and still, nearly every month, it's a big scramble to buy some.
I use to run an accounting office. One of the things you don't do in an accounting office is run out of A/P checks. Well, the little bitches I had working for me were suppose to keep up with and let me know when we had about 6 weeks worth so I could order them. Well I damn sho' didn't trust them so I put a few boxes away just to see if they would keep up with it. Hell no. Girl came in and said that we were out of checks. She was sort of surprised when I showed her the stash. Moral of the story. Hide some so next time she runs out its not your fault.