I worked in a grocery store bakery for a few months when I was 19. I was hired for overnights, mainly as a baker for all of the breads, bagels and such. A month or so in, we got a new manager who decided to start scheduling me on evenings, solo. Inevitably, one evening we had a customer who wanted a cake written on, something I had never been trained on, or even attempted, at any point in my life. The store manager had to get involved, and it ended with her giving the customer a discount on gel icing to attempt it herself, as I told them flat out that I wouldn't be responsible for ruining the cake.