You're in bed sleeping peacefully until you hear one of your poke-balls open, a few seconds later, you hear one of your Pokémon scream, it's your Buneary, she must've evolved into a Lopunny and found out what happens to her, you get downstairs and you see her looking angrily at the mirror

Lopunny: "No, no, no! I don't want these, I wanted to evolve to be strong, but now I look like a slut! I hate this! I have big tits and thighs! That pervy fucking Lucario won't let me hear the end of it!"