The last time I went to the Farmer's market I bought 5 avocados. They were all very firm, so I put them in a brown paper bag to ripen. The next day they were soft, but I could tell that parts of the peel had broken away from the fruit, if that makes any sense. I cut into them and they were all rotten inside. What happened? Also, I was just reading that you can tell if an avocado is rotten by removing the little nub where the stem used to be. It should be green underneath, not brown. But is this rude to do at Farmer's markets? I can just imagine getting dirty looks for that, especially if it causes them to go bad faster, which I would expect it would do?