I did something really dumb the other day, and it actually made me stop and wonder about myself.
I made a cheese and tomato sandwich and only used half the tomato, so I put the other half in a container to put in the fridge. The next day I decided I would use the other half, but it wasn't in the fridge. "Hmmm, I must have already used it", me thinks to myself. So I grab another tomato, cut it in half and go to the cupboard to get out a container to put it in. You guessed it. The half tomato from the day before was happily sitting in the container in the cupboard.
At least it had only been there a day. When my mother was alive I used to find all sorts of moldy things in her cupboards.