Quote:
Originally Posted by Wikipedia
Liberty spikes trace their origins to the Ancient Britons.[1] Warriors washed their long hair in lime water, which also bleached it blond.[2] This hairstyle was highly symbolic as a badge of honor and manhood: Celts were not allowed to spike or cut their hair until they had killed an enemy.[3]
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Sheamus has always been pretty into the culture, so, it makes sense that way. Still looks weird, but people will get over it. Especially when he's kicking people's faces in.