after Amy (Your Lucario Pokémon partner) went EXP Gringding in a cave known for their high level monsters, she returned thiccer, fatter and purple liquid dripping from her mouth due the dittos that got inside her body, making her now a Ditto Incubator.

Currently you two were laying in your campsite for the day, when she snapped out

Amy: ARCEUS PLEASE MY GUT CAN'T HOLD MUCH ANYMORE!!!! OouuuUUUUURRRRP!!!!!!she yelled in discomfort with her face blushing, holding her belly with her left hand, while the right one was holding her forehead