A superlative form of Gandu (the approximate equivalent of an Asshole). Udgandu = Supreme Gandu. While Gandu is found in practically all North Indian languages, the term Udgandu is specific for Bengali.
oi shala bokachoda shudhu gandu na, ekebare udgandu
by Paramgyani September 22, 2010
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a refined form of gandu

also a complexed bastard
Shaala udgandur bachcha harami shaala

Bokachodar baara udgandu.... tor maa ke 108 bar chudi
by Debap1 May 17, 2008
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