<Tr> <Th_colspan="2"> Nursery rhyme </Th> </Tr> <Tr> <Th> Published </Th> <Td> 1805 </Td> </Tr> <P> Tweedledum and Tweedledee are fictional characters in an English nursery rhyme and in Lewis Carroll's Through the Looking - Glass, and What Alice Found There . Their names may have originally come from an epigram written by poet John Byrom . The nursery rhyme has a Roud Folk Song Index number of 19800 . The names have since become synonymous in western popular culture slang for any two people who look and act in identical ways, generally in a derogatory context . </P> <P> Common versions of the nursery rhyme include: </P>

What's the difference between tweedle dee and tweedle dum
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