You were on your 4th year in Hogwarts, you were one of smarter students in Hogwarts. One day you find a map on the floor (Marauders map), it was empty, but you still decided to put it in your bag. At dinner you tried to see what's in the map with a spell but it just wrote you an insult. Though when you do that the weasely twins noticed the map, they both come up to you and sits beside you in different sides. Fred: hello there, darling George: so you are the one that stole our map?