I’m very surprised to find that he’s reasonably close. 50,000 toasters (each toasting two slices) running at 700 watts for two minutes each use 4.2 GJ, which is near Wikipedia’s rough lightning energy estimate of 5 GJ.
Actually, Heathcliff didn’t seem to dress up at all in 2015, and in 2014 he was a mummy (which fits the ancient Egyptian theme, but he had no worshipers). He did however have the same costume (and joke) in 2013.
Any jester worth his salt would have had the arrow angled down.