Godzilla vs. Megalon (1973), where it was ruled in a 7-2 decision "Megalon's emission of lightning from his horn-like appendage did not constitute a violation of Godzilla's civil rights." (from the Majority opinion)
Interesting; though they sound a bit like the ceramic shield Theophilus sugggests for enamelling where the charcoal fire is build around the outside of it.