"One step closer cape-boy, and I'll wee in your eye.... "

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or

"One step closer and I'll blow the ozone layer to smithereens..."


Footnote:
It seems that not all scienstists agree that the methane produced by cow farts, rotting vegetation etc actually does help destroy the ozone layer. Apparently, some believe that it actually has a positive effect.
The ozone layer - to fart or not to fart, that is the question..