Penguin Potential, I'm not sure I understand why most of the carolers...

I'm not sure I understand why most of the carolers flat-out collapse. what happened?

Tinkerbox (blue and green colt aka first victim) had the wrong lyrics
Spangle (dark blue and black) choked on a snowflake
Sugar Cloud (white and blue) fainted at the sight of violence
Skye (blue and pink) bumped into Bookfort (green and orange) and got into a fight over personal space
Dr Octoberfest (robot, green) short-circuited and fell on Zeta Prime (black and white stripes) and fell over
Sky High (long haired white and blue) fell asleep on Frigid Drift (short haired white and blue) who was oblivious to all of the incidents