Unexpected taste bud unpleasantness is always unfortunate. Whether you're expecting water and get a mouth full of vodka, or take a bite of wasabi when you think you're getting mint, these things happen; it's part of life. But what's unfair is when it happens purposely to an unsuspecting child at the hands of an adult.
I can still remember the day when some health conscious mom at a birthday party tried to pass off carob as chocolate. Lady, wherever you are, you are one cruel piece of work. Carob is not chocolate and I to this day refuse to eat it ever again after that initial deception and betrayal.
Plus, it's not even better for you – it's actually higher in saturated fats. Take that!