Hi Tis. Very windy in the UK tonight. Very quiet on the roads where I live? So I open me bac door slightly & poke my phone threw the gap. Then play threw an app I av, 8,500hz tone. All of a sudden I can hear 3/4 cars wheel spinning, screeching tyres, then reving their engines into the distance until an abrupt stop! Silence... Now I'll change the tone to 9,000hz. Whoop! There they go again! Ha. Me 1-0 perps. They must av a spectrum analyzer in their cars to match the frequencies outside, when I'm indoors. Try doin this simple test for yourselves Tis. But at nyte wen all is silent! U never kno wot youl hear? My perps are sitn in their cars around the corner frm me. Victory tonight! ;)
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