From tiny misprints to stairs that lead nowhere, these folks all failed at their jobs for one day. No one is perfect, since we're all human. Even if you do the same job day in and day out, sometimes you'll make a few mistakes. I'm a big fan of the “ frog cake ” mishap (see #10 for details). Perhaps the usual cake artist was out that day, and maybe an untrained employee just took a swing at it. It's humble, it's modest, it's almost abstract! It's certainly an unforgettable cake, just not in the…