"O Come, All Ye Faithful" was a Christmas carol. In 1994, when the Christmas decorations were put up around Hogwarts Castle, the suits of armour were bewitched to sing carols, but had difficulty in remembering all the words. Peeves was known to hide inside the armours and fill in the gaps in the songs with rude lyrics of his creation.
"O Come, All Ye Faithful" was a Christmas carol. In 1994, when the Christmas decorations were put up around Hogwarts Castle, the suits of armour were bewitched to sing carols, but had difficulty in remembering all the words. Peeves was known to hide inside the armours and fill in the gaps in the songs with rude lyrics of his creation.
