First, speculation on the title:
Chocolate Lab = adorable Labrador, ie Clark with puppy dog eyes?
Or--someone going to steal Lois' loot of chocolate to create an choc lab where they will explode all of that chocolate, covering Metropolis in a sticky brown goo and like in 'Pheromone' too much of a good thing is a bad thing and--
Or--Moose gobbles up all of the chocolate!
I love it!!