...where they had just had a holiday party -- on this last day before the Christmas vacation.
At the party, they sang "Rudolph the Red Nosed Reindeer," but NO ONE in the class knew (or remembered) the ending of the holiday classic...you know that part:
Then how the reindeer loved him
and they shouted out with glee
"Rudolph the Red-Nosed Reindeer,
You'll go down in history!"
In short, they couldn't sing the climax of the song, which, as a result, became merely a story of redemption-less cruelty toward a strange-looking deer.
(Granted, the complete song seems to celebrate taking advantage of the odd kid on the block, but at least it recognizes some sort of unified community!)