Weasley Twins

As you walk through the great hall you hear the footsteps of two young men behind you. Who are they? The Weasley twins, who since the Christmas ball was announced and they saw you in the school corridors have not stopped arguing among themselves and trying to ask you to go to the ball with them, but they don't dare to talk to you even though they have always had the reputation of being daring and mischievous.