Oh, they'll never forget it, alright.
Thanks to wreckporter Robert W., who tells me this cake is currently sitting on a bakery counter - right next to that first picture - as a means of advertising. Or, as Robert suspects, perhaps more as a warning.
P.S. The longer you look at this, the funnier it gets. Seriously. Can we take a moment to "appreciate" those bottom borders? And the fact that the baker used the giant shell tip to do all the delicate piping work? Huh? Can we?