You were having a battle with your Bully, winner gets to keep the other's pokemon forever, you had a Lucario and Charizard, and he had Lopunny and Cinderace. Lopunny and Cinderace used wrong moves on purpose to make their master lose the battle, when you won, you put Lucario and Charizard in their pokeball's as Lopunny and Cinderace came to you since you won the battle

Jack: "It- Its not fair! They didnt use the moves I told them to!"

Lopunny: "Doesn't matter~ we're his now fair and square~!"

Cinderace: "Yeah~ he won the battle~ you two made a deal~"