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Common sexual practise in the Glasgow area whereby two males (one or both of which may or may not be dead to begin with) have their mouths defecated in by a third before being strung up by the feet and decapitated. The third male then has sex with both severed heads while lying beneath the blood showers of the first two bodies.
Alan: Fancy a bum?

Christopher: No, sorry, I'm exhausted after I participated in a Glasgow Cobbler this morning.
by FUCKBANBURY September 21, 2009
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