1. Last minute vacation time
2. Vacation time taken unnecessarily, often for no reason other then one does not want to work any longer.
3. Typically a small amount of vacation, usually between two and four hours.
George: "Man, I do not want to be here today...it's Friday and I have a hot date tonight"
Fred: "Why not use JJR Time?"
George: "Dude! Great idea"
Fred: "If you are leaving then no way I want to stick around and be bored by myself. I think I will also use some JJR Time!"