A "Jim Dick" is something measured in inches. It's very small and one has to mostly squint to see it. It's extremely rare for a Jim Dick to reproduce. Back in the Roman times a Jim Dick was thought of a form of mental retardation and these people were executed.
by U.N.I.T February 11, 2019
by ass_slapper October 23, 2019
Self-explanatory, no definition needed
by pshemos85 September 28, 2017