Ah Les, maybe you ate the famous cloned whelks of mass destruction, they nibble away at your insides until you eventually fill with noxious gases & explode, therefore enveloping half of lincolnshire in an hallucinagenic fog. They were developed to halt the advance of the North Bank Gastropods with all the advanced technology at their disposal i.e heat-seeking missles. Us underdeveloped nations without the economies to support the b uilding of advanced weapons technology, occasionally have to resort to less pleasant ways of disposing of people!