When a song is so big it's not just a Phat tune it's a Morbidly Obese Tune..... Mostly used around the cinema/restaurant area at Bury St edmunds, Suffolk.

Also called MO Tune for short!!
Guy 1: Man This is a Phat Tune...
Guy 2: No mate this is a Morbidly Obese Tune...
Guy 1:True.....MO TUNE!!!!
Guy 2:..MO TUNE!!!
by Kitchen Gods J.V January 18, 2010
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An Imaginary figure who people use to name things in the common world. Such as, when someone says something like when people say Jo Blo, just saying whatever name comes to mind.
Oh the was some Morbidly Obese Partially Decapitated Johnny at the bar yesterday licking cigarette butts off the floor.
by Saiyan_toilet July 9, 2003
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