“It’s Blitzen,” he explained. “He’s gone lame – I think it’s his long-standing arthritis. Whatever, the sleigh’s pulling to the left badly and we’re literally going round in circles. We can’t get south of Helsinki.”
Eventually, the rescue service turned up, looking suspiciously like a polar bear. In no time, it had solved the problem by eating both Blitzen AND Donner.
The sleigh was going straight again, Santa was happy.