[jawbreaker] {n.} 1. A large piece of hard candy or bubblegum. […]

[jaws tight] {adj.}, {slang}, {informal} Angry; uptight; tense. * /Why are […]

[jazz up] {v.}, {slang} To brighten up; add more noise, movement, […]

[Jehu] See: [DRIVE LIKE JEHU].

[jerk] or [jerker] See: [SODA JERK] or [SODA JERKER].

[jerry-built] {adj.} 1. Built poorly or carelessly of cheap materials; easily […]

[Jesus boots] or [Jesus shoes] {n.}, {slang} Men's sandals, particularly as […]

[jig's up] See: [GAME IS UP].

[jim-dandy] {n.}, {slang} Something wonderful; something very good. * /Tommy's new […]

[jink] See: [HIGH JINKS].