According to that last ad, Kryptonite rock is worth $2.19. That's a fair price to kill a Superman. Know what else has a value of $2.19? Peanut butter.

This commercial for Superman Peanut Butter raises more questions than it answers. Why does Lex Luthor want that peanut butter recipe so badly? And why is Superman willing to die to keep it from him? What's in that peanut butter?

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