Mario opens his pantry, only to find a note from Wario. Hey, it's Wario, just wanted to say I ate most of your food, but I left something in return.
Mario looks further to see Waluigi in between some boxes. He slowly pulls out a box of cereal, looking at Waluigo the whole time.
He puts a bowl on the table, and fills it with Super Mario Cereal. "Hey, Mario, it's already 5, I think it'sa little late for breakfeast", Luigi points out while playing Super Mario Odyssey.
Mario doesn't respond as he proceeds to pour the entire box in his bowl. "Here's an amiibo for the game your aren't in", Mario remarks throwing the box to Luigi. "That hurt", replies Luigi.
Mario begins eating his cereal, he eats for a while. To fully emerge yourself, there's probably a Cereal ASMR on youtube. I'd say the end, but Mario is still eating.