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1 definition by Themanwiththegiantwilly

 
1.
When armies took prisoners in southern Europe in the middle ages, they would sometimes be offered the chance to earn their freedom by eating a fig from a mules anus. As the captors taunted their captive, offering him this degrading method of escape, they would bite their thumbs.
I bite my thumb at thou! infidel!
by Themanwiththegiantwilly September 14, 2005