Belligerently

Before you've even properly dried yourself out yet, you hear warning sirens. Seems that they noticed you picking up your planet and then falling on its surface - who would've thought? You haven't got the faintest clue of how the inhabitants of this planet think they can hurt you, but you're not going to just sit pretty and find out.

Sophie: "Oh, so it's a fight you want? Well let's just see who's got bigger (wo)manpower in this battle."

You immediately grow yourself to a relative five miles high, tall enough that bombers can't reach over you, and hopefully tall enough that the bombs they drop will be inconsequential to you. You easily overshadow the whole city, which gives you an idea.

Sophie: "Mmmaybe I shouldn't judge them so harshly based on first impressions alone... but fuck it, this is something I've always fantasized about doing if I become a giantess, and there's no way that anybody outside of this nanoplanet is ever gonna find out."

You turn around with your back against the city and fall backwards, instantly crushing the entire city under your butt. You wiggle around a few times just for good measure, to make sure there weren't any megaton-rated bomb shelters remaining.

Sophie: "There! That was fun, now wasn't it?" >:)

You have a hunch that if this planet is technologically advanced enough, they're likely to have nukes. There's little reason that a nuclear explosion would trigger at these kinds of scales, but same goes for all other physical and chemical reactions, so what do you know? You grow a hundred times larger, so that even the Tsar Bomba would only be a tickle. Then you plow through the entire continent with your dinosaur-extincting asteroid boobs, destroying every single alien settlement on the continent in a few moves.

You place a contemplative finger onto your lips.

Sophie: "Hmm... The rest of these aliens are prolly gonna be mad that I wrecked their continent... I better put the whole planet out of its misery. It's only merciful!"

You grow yourself a thousand times larger, now back to the size where you're able to hold the planet in your hand. You pick it up between two fingers and gently grind it into dust against your hard abs. This whole planet, with its countless unique cultures and individuals, is not nothing but a forgotten mote of space dust on the edge of a single atom.

And you couldn't be any hornier. The utter, irresistible erasure of a celestial body, using nothing but your physique... it's too much, you have to rub one out right there and then! You grow a yet another tenfold in size and furiously grind your cameltoe against the atom's electron cloud. You insert a particularly straight molecule into your vag and then rhythmically enlargen and shrink yourself so that the atoms feel like the world's smallest dildo.

You cum, and in doing so scream your lungs sore, knowing that nobody will hear it. You thrash around as immodestly and unphotogenetically as you desire, for there's nobody to observe you, nobody to judge you, and nobody else to please but yourself.

Sophie: "Fff--f-fuck!! Fuck, fuck FUCK YES! I need to have more of this, right now!"

You start looking for more of these nanoplanets.