A Million Little Pieces was a popular book about addiction that inspired a lot of people. Turned out the story wasn't true, and so a lot of inspiration turned into anger.
Always thought that was interesting, because if the lies weren't exposed the readers would have remained inspired.
One time I called in sick to work, they even sent me flowers. Later they found out I was lying and wasn't really sick and they got angry about it. Humans are strange.
One time someone asked me to paint their house, so I made a 5 square inch watercolour of it. Unfortunately this didn't protect the walls from moisture and they ended up with mold in their house.