1 definition by Justin987

Originating in the 1950`s. Another word for a serverly obese human being that is not good at anything to do with sports. Also another word for a dougnut. Many " JRs " are known to have a tiny penis and an extremly large rectum.

Parents sometime name there child JR if they are noted by the docter that the child is over 100 pounds at birth.
Justin: Jeeze

Hunter: What?

Justin: That person over there is huge!

Justin: yeah, he sure reminds me of a JR
by Justin987 June 25, 2009
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