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In the cartoon “Pinky and the Brain”, Brain’s name is an acronym for “Biological Recombinant Algorithmic Intelligence Nexus”.  Pinky’s name is probably a reference to the fact that a “pinky” is another name for a baby mouse that has not yet grown fur.  However, in the cartoon itself, the name was given to Pinky when Brain was referring to his own pinky when insulting certain scientists, but Pinky mistakenly thought Brain was referring to him.  Besides “pinky”, other valid names for baby mice are pup and kitten.

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