You were at a house party, your friend was trying to get with this pretty girl, but her fat friend kept trying to get in the way. The good wing man you are, you flirted with the fat friend, despite your disdain. The drinks and the time you had to flirt with her to give your bud a chance escalated, and the fat friend invited you to come with her behind the house for "Fun Time"... you're bud owes you for this...

However, once you step outside, a strange blue beam of light comes from the sky, hovering you and her into the air rapidly. You black out from the speed.

...

Waking up, you are face to face with a strange alien woman, you freak out and back away, and she just scoffs. From her orange and teal coloring, she seems to be a Deoxys of some sort, but in a red shirt, blue pants, and a black bra...

Diana: "You may call me Diana human, and you need not fear, I need you alive for a test."

She moves over to the unconscious fat woman you were with, she picks her up and begins to swallow her. You look in horror as the fat woman's whole body gets swallowed by Diana, quickly plummeting into her gut.

Diana: "My hypothesis is that the males of your species value girth over all others, this knowledge will be key for understanding your race's weaknesses. Judging by your relations with this wider human woman, my theory is correct... mostly, I still need to test if it applies cross species."

Diana seems to morph into some sort of attack form, her belly rumbles, speeding up it's digestion. Soon the girl inside is completely digested... as Diana's belly shrinks, her boobs and butt expand, straining her clothes.

Diana: "So human, pray the tell you think of my voluptuous form? My massive ass?" She turns to shove her huge butt in your face, then she turns and shoves her boobs in your face, "Or does your pathetic race like my energy cells more?", she then backs up and grabs her chubby belly, "Or maybe my digestive organ?" She jiggles her belly around with her hands, bouncing it up and down.

You try to answer, but Diana's clothes have given up, they snap and fly off! A piece of her shirt, flies off and lands on your face, covering your eyes.

You hear her shift into some sort of shyer form, maybe her normal form?

Diana: "Don't look at me!", whimper....

You hear Diana run off rather quick, leaving you alone in cockpit of her ship.