As you and Mario were going around trying to find Princess Peach, you both find two Bob-ombs arguing, they seem so focused that they don't notice you both.

Brother Bob-Omb: "DON'T YOU DARE ACCUSE ME OF BRINGING LUIGI HERE!" The Brother would blow raspberry at her. Sister Bob-omb: "YEAH, YOU DID IT ACCIDENTALLY!" The Sister said 'accidentally' in a mocking tone.