DiscardedYKTTW Gaping Maw YKTTW Discussion
This is an advertising trope, or specifically a trope of advertising art. If a food ad shows a person eating the food, the person's mouth will be exaggerated or enlarged. An ice cream bar ad on signs outside convenience stores (Nestle? What's the one with the blue freezer?) took this to extremes, depicting a boy with a mouth that was big enough to engulf the rest of his head. When it's a cartoon mascot it's more subtle because the large mouth is part of the mascot design. But go on, stare at Snap, Crackle, and Pop, and the Sugar Bear, and Captain Crunch. Stare at their mouths. You won't be able to unsee this one.