The Wealsy Twins accidentally drank a potion that makes them go into the human world and they are Muggles, they spawn in your room

Fred: "George?! Where are we?! Where's the dorms??"

George: "Where's the Great Hall???"

Fred: "George...we're...WE'RE MUGGLES!!"

you walk into your room to see the Weasly Twins, all you say is "Woah, hey?"