The killing off of a character previously introduced as, or given to be, a recognizable character adapted between media, and replacing that character with a younger namesake for the sake of arbitrarily observed "continuity".

Reference to the character {Henry} James "Jimmy" Olsen (Aaron Ashmore) being a contemporary of Clark Kent and Lois Lane for three seasons on 'Smallville', before being replaced by a heretofore unmentioned younger brother "Jimmy" Olsen, in an effort to conform to general Superman continuity in which Jimmy Olsen is much younger than Superman/Clark Kent and Lois Lane, and despite more glaring deviations from generally observed Superman continuity (e.g. Chloe Sullivan, Davis Bloome).

Also: Bump the Jimmy, Jump the Jimmy, Jimmy the Jimmy; or, -ed, -ied, the Jimmy.

A casual invitation / threat used by an individual that is not afraid of fucking someone up.