A word used by certain busy professionals that see clients on a morning and afternoon schedule basis. When your morning session runs into the afternoon session, therfore you have absolutely no time to take a lunch break. When you try take a break, it's done during your afternoon clients scheduled appointments.
Mike was so busy in the morning ar work seeing clients, that he had no time to take a 5-10 minute lunch or even any lunch whatsoever for that matter. He tried to take a break to go to the bathroom or eat something, but only after his afternoon clients already were waiting. He was on NEGATIVE LUNCH!