Joke Collection Website - Cold jokes - What does it mean to "shoulder four or two passengers and help others to be slaves for a day"?

What does it mean to "shoulder four or two passengers and help others to be slaves for a day"?

Take four or two guests and help others be slaves for a day? What does this mean? ? Take four or two as guests? At the earliest, it refers to vendors, small vendors and small traders who used to walk around the streets in the countryside, carrying poles and carrying goods; ? Help people be slaves for a day? Is to help the old man's family do a day's work, that is, to work everywhere to make a living.