Don’t think about it, that’s the first rule. Just…don’t.
Mopey isn’t super-knowledgeable about superheroes, but she’s seen enough Superman movies (i.e. that specific one) to know that you can reverse time by reversing the planet’s rotation…by flying around it into the opposite direction really fast. On top of that, she has the instinctual understanding of her new powers and their limits which the majority* of superheroes seem to have upon being freshly-minted. So she knows it’s possible and she knows she can do it, so she does it…likely for the only time ever, since the ability to reverse time is just too problematic in terms of getting the plot to make some semblance of sense. So this particular new-found power of hers is certain to be quickly and mercifully buried after this single application.
But that’s not the things you shouldn’t think about…those things are:
– reversing the planet’s rotation so abruptly would be very bad for its geological stability. It’s not a solid object, after all…and exerting that kind of force onto a rotating mass of a viscous liquid would have certain unfortunate consequences of any potential solid crust such a mass might have. So Mopey would be causing an extinction-level-event at the very least…if she’s a bit overenthusiastic or clumsy, she might even manage to cause the planet to break up.
– while the effects on the planet would be drastic and tragic, the effects on time would be nil. We measure time by the planet’s rotation (among other things, nowadays), but the rotation doesn’t cause or control the flow of time.
Of course I stated all of that only so you can not-think about it better. Just lean back and go with the moment. Cheesy and silly as it was, I have a soft spot for that particular scene…and would hope that this homage could be enjoyable on similar grounds. XD
More on Thursday.
*Admittedly, some creators avoid that inexplicable trope and even make it a plot-point that newly-empowered superheroes struggle to understand and correctly apply their new-found powers.