Lyric discussion by Hick 

To me the debate on Trani is quite simple (I may have it wrong) however in Oz we call an old radio a trani (from transister radio). So a trani has a tinny sound anyway, thus in a tin shed or on a tin roof sounds even worse. Hence "a white noise sound, like a trani on tin".

Dude he's talking about trani- a transvestite on drugs

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