Weasley is Our King badge

"As they rose from the table, Hermione got up too, and taking Harry's arm, she drew him to one side. 'Don't let Ron see what's on those Slytherins' badges,' she whispered urgently. ... .... Harry cast a curious glance at the crown-shaped badges as they passed the Slytherin table, and this time he made out the words etched onto them... WEASLEY IS OUR KING. With an unpleasant feeling that this could mean nothing good, he hurried Ron across the entrance hall, down the stone steps, and out into the icy air."

- Harry gets a sinking feeling about the badges.

The Weasley is Our King badges were badges made during the 1995-1996 school year at Hogwarts. They were created as an accompaniment to the song by the same name as part of an intimidation campaign conducted by the Slytherin Quidditch team, Slytherin House in general, and Draco Malfoy in particular.

On the morning of the first Quidditch] match of the [[1995-1996 season, Harry and Hermione observed nearly everyone at the Slytherin table in the Great Hall wearing one of these badges.

Appearances

 * Harry Potter and the Order of the Phoenix