Farnsworth: Back in 2801, the Friendly Robot Company built a robotic Santa to determine who'd be naughty and who'd been nice and distribute presents accordingly. But something went wrong.
Fry: Wow! 2801! Anyway...
Farnsworth: Wait, you fool! Due to a programming error, Santa's standards were set too high and he invariably judges everyone to be naughty.
Amy: If he catches you after dark, he'll chop off your head and stuff your neck full of toys from his sack of horrors.
Farnsworth: Nice meeting you.