It was around 9 o’clock in the morning, and Harry had an early breakfast before his first Quidditch match. They were going to play Slytherin. Harry could tell the game would get dirty when he saw the Weasley twins walking toward the Slytherin common room with a foul-smelling, green-colored liquid. Initially, they froze upon seeing Harry, but he just gave them a wink as they passed him.